{"product_id":"guppy-grass-najas-guadalupensis-bagged-freshwater-plant","title":"Guppy Grass (Najas guadalupensis) - Bagged","description":"\u003cdiv style=\"background:#E8F5E9;border-left:4px solid #2E7D32;padding:10px 14px;margin:0 0 14px;font-size:0.95em;\"\u003e\n\u003cstrong\u003eIn-store pickup only.\u003c\/strong\u003e Your order is reserved, we hold off on bagging until you arrive so it stays healthy in its display tank.\n\u003c\/div\u003e\n\u003cp\u003eGuppy Grass (\u003cem\u003eNajas guadalupensis\u003c\/em\u003e) is one of the fastest, most forgiving plants in the hobby and something close to a secret weapon for breeders. Its fine, needle-like leaves knit into a dense tangle that fry, shrimplets, and shy fish vanish into, while the plant strips nitrate and excess nutrients out of the water column quickly enough to starve out algae. No CO2, no substrate, and no special lighting required, you simply drop it in. Browse our full selection of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\"\u003efreshwater aquarium plants\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #2E7D32;padding-left:8px;\"\u003eCare Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLighting:\u003c\/strong\u003e Low to high. It grows under almost anything, and brighter light simply makes it denser and faster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCO2:\u003c\/strong\u003e Not required. This is a true low-tech plant, though it responds quickly to liquid fertilizer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 68 to 82°F for tropical tanks, and it tolerates water down into the 50s, so it also works in unheated tubs and outdoor summer setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowth:\u003c\/strong\u003e Very fast. Plan on thinning it regularly, especially in a well-fed tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling:\u003c\/strong\u003e The stems are brittle and snap easily. That is completely normal, and every broken fragment grows into a new plant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater column feeder:\u003c\/strong\u003e It takes in nutrients through its leaves rather than roots, so dosing the water is what keeps it lush.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #2E7D32;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eCommon Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eGuppy Grass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eScientific Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003e\u003cem\u003eNajas guadalupensis\u003c\/em\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eAlso Known As\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eNajas Grass, Guppy Weed, Common Water Nymph\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eCare Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eEasy, great for beginners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eLighting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eLow to high\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eCO2\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eNot required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003e68 to 82°F, tolerates cooler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003e6.0 to 8.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eHardness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eSoft to hard, very adaptable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eGrowth Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eVery fast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003ePlacement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eFloating, or loosely anchored in the background\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003ePropagation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eFragmentation, any broken piece regrows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eThe Americas\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;background:#F1F8E9;\"\u003e\u003cstrong\u003eSold As\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #C8E6C9;padding:6px 10px;\"\u003eBagged portion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #2E7D32;padding-left:8px;\"\u003ePlanting and Propagation\u003c\/h3\u003e\n\u003cp\u003eGuppy grass has no meaningful root system, so treat it as a floating or loosely anchored plant rather than something you bury in the substrate. Two easy options:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloat it:\u003c\/strong\u003e The simplest approach and the most common. Let the portion drift at the surface, or tuck it into a back corner where the flow holds it in place. Floating gives you the thickest fry cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnchor it:\u003c\/strong\u003e Slide the base of a few strands under a rock or about an inch into the substrate. It will stay put, though it never grips like a true rooted stem plant.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePropagating it takes no effort at all. Break off a piece and it regrows into a full plant within a couple of weeks, which is why one bagged portion usually turns into more guppy grass than you planned on. Thin it before it shades out the plants underneath, and please never release trimmings into local ponds, creeks, or storm drains. Excess goes in the trash or the compost bin.\u003c\/p\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #2E7D32;padding-left:8px;\"\u003eWhy Breeders Keep It Around\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFry survival:\u003c\/strong\u003e Thick enough that livebearer fry from \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/assorted-guppy-poecilia-reticulata-freshwater\"\u003eguppies\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/premium-assorted-endler-poecilia-wingei-freshwater\"\u003eendlers\u003c\/a\u003e make it to adulthood in a community tank without a separate grow-out setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrate export:\u003c\/strong\u003e It pulls nutrients out of the water fast, which makes it a go-to fix for a heavily stocked tank or one that keeps fighting algae.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLive food factory:\u003c\/strong\u003e The tangle harbors copepods, infusoria, and tiny snails, free first food for fry and a natural hunting ground for an \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/indian-pea-puffer-carinotetraodon-travancoricus-freshwater\"\u003eIndian Pea Puffer\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShrimp habitat:\u003c\/strong\u003e \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/assorted-dwarf-neocaridina-shrimp\"\u003eNeocaridina shrimp\u003c\/a\u003e graze biofilm off the leaves, and shrimplets use the same cover the fry do.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #2E7D32;padding-left:8px;\"\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/hornwort-ceratophyllum-demersum-freshwater-plant\"\u003eHornwort\u003c\/a\u003e and \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/anacharis-egeria-densa-bunch-freshwater-plant\"\u003eAnacharis\u003c\/a\u003e, the other two no-effort nitrate sponges\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/frogbit-portion-cup-limnobium-spongia\"\u003eFrogbit\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/salvinia-minima-water-spangles-floating-plant\"\u003eSalvinia\u003c\/a\u003e for shade above the tangle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/squeakysaquatics.com\/products\/seachem-flourish-comprehensive-supplement\"\u003eSeachem Flourish\u003c\/a\u003e or \u003ca href=\"https:\/\/squeakysaquatics.com\/products\/aquarium-co-op-easy-potassium\"\u003eAquarium Co-Op Easy Potassium\u003c\/a\u003e to feed the water column\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/freshwater-aquarium-plants\"\u003eMore freshwater aquarium plants\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #2E7D32;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I have to plant it?\u003c\/strong\u003e\u003cbr\u003eNo. Guppy grass is happiest floating and has no real roots, so planting it is optional. Most people just drop the portion in and let it drift.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it take over my tank?\u003c\/strong\u003e\u003cbr\u003eIt can if you let it, which is exactly why it works so well. Pull out a handful every week or two, and treat that as routine maintenance rather than a problem.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy did it fall apart when I moved it?\u003c\/strong\u003e\u003cbr\u003eThe stems are naturally brittle and shed pieces whenever they are handled. Nothing is wrong. Every fragment that stays in the tank becomes a new plant.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe with shrimp, fry, and snails?\u003c\/strong\u003e\u003cbr\u003eCompletely. It is one of the best plants you can add to a shrimp tank or a breeding setup, and nothing in it will harm invertebrates.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in an outdoor tub over the summer?\u003c\/strong\u003e\u003cbr\u003eYes. It handles cool water and full sun well and is a common choice for outdoor livebearer tubs. Bring it back inside before the first hard freeze, and never dump trimmings into natural water.\u003c\/p\u003e\n","brand":"Squeaky's Aquatics","offers":[{"title":"Default Title","offer_id":48161917632731,"sku":"48161917632731","price":4.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/Guppy_Grass_6_1200x1200_9b4605e7-b683-43e7-8e52-4bd0a921cf50.webp?v=1768768285","url":"https:\/\/squeakysaquatics.com\/products\/guppy-grass-najas-guadalupensis-bagged-freshwater-plant","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}