- Sku: BM250
- Vendor: Quantum USA
Quantum Bio-Metals
Quantum Bio-Metals is a bioactive color enhancer built to wake up the greens and yellows in your reef. It delivers iron and manganese in ionic, complexed, and chelated forms, so the metals stay bioavailable to your corals over the full dosing cycle instead of crashing out of solution. If your green montis, hammers, or torches look washed out, this is the trace-metal boost that brings the pigment back. Browse the rest of our reef additives and supplements.
How It Works
Iron and manganese sit at the center of the biochemical pathways corals use to build green and yellow pigments. In most closed reef systems these metals get consumed faster than water changes replace them, and free iron oxidizes out of solution quickly. Bio-Metals supplies iron and manganese in three forms at once: ionic for immediate uptake, plus complexed and chelated for a slow, steady release. That gives coral tissue a consistent supply to drive vivid green coloration instead of a spike-and-crash cycle.
Features
Dosing
Add Bio-Metals into an area of high water flow. Dose daily based on how heavily your reef is stocked, then fine-tune to keep iron between 0.1 and 0.3 ppm. As a reference, 1 mL per 100 L (26 gal) raises iron by roughly 0.01 ppm. If the bottle has settled, invert it gently 3 to 4 times before dosing.
| Stocking Level | Daily Dose |
|---|---|
| Lightly stocked | 0.50 mL per 100 L (26 gal) |
| Moderately stocked | 0.75 mL per 100 L (26 gal) |
| Heavily stocked | 1.00 mL per 100 L (26 gal) |
| Target | Maintain iron 0.1 to 0.3 ppm |
Test iron regularly. Excess iron can feed nuisance algae, so dose to your test results rather than overshooting.
Choose Your Size
All four sizes are the same formula. Pick based on system volume and how you dose.
| Size | Approx. Duration* | Best For | SKU |
|---|---|---|---|
| 250 mL | ~4 months | Nano and small reefs, or a first trial | BM250 |
| 500 mL | ~8 months | Standard reef tanks, most popular size | BM500 |
| 1000 mL (1 L) | ~15 months | Large or heavily stocked reefs | BM1000 |
| 5000 mL (5 L) | Years | Big systems, frag farms, and auto-doser refills, best value | BM5000 |
*Approximate, based on 0.75 mL per 100 L per day on a 75-gallon reef. Your actual usage scales with tank volume and stocking.
The Quantum Bioactive Color System
Bio-Metals is Step 4 in the Quantum saltwater color program. For the full coloring effect it is designed to run alongside Quantum Bio-Enhance, Bio-Gen, and Bio-Kalium, which together supply the biomolecules and the major, minor, and trace coloring elements corals need. Bio-Metals covers the greens and yellows. Quantum offers companion bottles that push reds and pinks and others that intensify whites, blues, and violets, so you can dial in the exact palette you are after.
Specifications
| Specification | Detail |
|---|---|
| Product | Quantum Bio-Metals (Bioactive Color Enhancer) |
| Brand | Quantum USA |
| System Step | Step 4, Bioactive Color Intensifiers |
| Color Target | Green and yellow coral pigments |
| Key Elements | Iron and manganese (ionic, complexed, chelated) |
| Use In | Saltwater reef aquariums |
| Daily Dose | 0.50 to 1.00 mL per 100 L by stocking |
| Iron Target | 0.1 to 0.3 ppm |
| Dosing Pump | Compatible |
| Available Sizes | 250 mL, 500 mL, 1000 mL, 5000 mL |
Recommended Pairings
- Red Sea Trace Colors A/B/C/D Pack: a complementary coral-color trace element program
- Fritz Coral Max: feed your corals to support color and growth
- Reef additives and supplements: calcium, alkalinity, and trace element dosing
- Live corals: find new green and yellow pieces to color up
FAQ
Will Bio-Metals turn my corals green?
It intensifies the green and yellow pigments corals already have by supplying the iron and manganese those pigments depend on. It will not add color a coral is not genetically capable of, but it brings faded greens and yellows back to life.
Do I have to buy the other Quantum bottles too?
For the best result, yes. Bio-Metals is Step 4 of a system designed to run with Bio-Enhance, Bio-Gen, and Bio-Kalium. It still helps on its own, but the full lineup delivers the complete coloring effect.
Can I run it on an auto-doser?
Yes. It is a stable liquid made for daily dosing and runs cleanly through any dosing pump. Add it to a high-flow area of the tank.
Could it cause algae?
Iron can feed nuisance algae if you overdose it. Test your iron and dose to keep it in the 0.1 to 0.3 ppm range rather than pouring in extra.
Have a question?

Quantum Bio-Metals


