Step 4 — Bio-Active Color Elements / Bio-Gen™
Reef Essential® · White · Blue · Violet
Bioactive halogens for white, blue, and violet corals.
Bio-Gen™ supplies iodide, fluoride, and bromide — the halogens behind white, blue, and violet coral pigmentation — in the ratios corals naturally take them up. Part of a four-product series that must be dosed together with Bio-Kalium, Bio-Metals, and Bio-Enhance.
Halogens do double duty in reef tanks
Iodide, fluoride, and bromide intensify white, blue, and violet coral color — but that's not all they do. They also help reduce coral bleaching, improve calcification, and act as antioxidants that support your coral's natural resistance. Bio-Gen is also beneficial for macroalgae growth, the "good" algae you actually want in a reef system.
Bio-Gen is one part of a coordinated four-product series. Bio-Enhance, Bio-Metals, and Bio-Kalium round out the required biomolecules and major, minor, and trace coloring elements — using just one leaves the others under-supplied.
What's in the bottle
Contents
Deionized water plus iodide, fluoride, and bromide.
Use as a team
Must be used alongside Bio-Enhance, Bio-Metals, and Bio-Kalium for the full coloring element profile.
Directions
Shaking isn't required, though inverting 3–4 times helps if it's been sitting a while. Add to high water flow; safe on a dosing pump.
Reef aquariums only
Formulated for reef tanks with coral, not general saltwater setups.
Monitor iodine
Keep total iodine concentration within 0.06–0.09ppm — over-dosing halogens can cause issues just like under-dosing.
Want stronger bone growth too?
Pair with Step 3's Aragonite Enhancers™ for coral bone density and growth alongside color.
Dosing guide
1 mL/100L (26 gal) raises total iodine by roughly 0.02 ppm; other halogens increase relatively.
| Stocking level | Dose |
|---|---|
| Lightly stocked | 0.50 mL/day per 100L (26 gal) |
| Moderately stocked | 0.75 mL/day per 100L (26 gal) |
| Heavily stocked | 1.00 mL/day per 100L (26 gal) |
| Or as required | to maintain 0.06–0.09 ppm total iodine |
Questions about this product
Do I need all four products in the series?+
Will this help with coral bleaching?+
Can I use this on a dosing pump?+
Not sure how much you need?
The dosing app calculates exact amounts for your tank size and iodine reading.
Order direct from Quantum