Iodum 50 ml — Concentrated Iodine Supplement for Soft Corals and SPS - Aquaforest

Aquaforest Iodum 50 ml — iodine supplement large format for reef aquariums

The Iodum 50 ml ships Aquaforest's concentrated iodine formula in a bottle 5× larger than the 10 ml. Autonomy scales up accordingly on established reef tanks — several years for a 100 L tank, or several months on a multi-tank system. No concentration difference between the two formats: same effect per drop, only the container changes.

Economy format of choice for mature SPS tanks actively managing blue/purple pigmentation via balanced iodine. Compatible with ICP-driven dosing or a simple visual protocol depending on precision required.

Iodum 50 ml use

• Starting dose: 1 drop per 100 L of tank water per day.
• Effect: +0.01 ppm iodine per drop per 100 L.
• Target: about 0.06 ppm iodine in the tank.
• Adjustment: tune per ICP or observed coloration.
• Pitfall: don't double the dose "to go faster" — iodine oxidizes quickly and excess isn't absorbed any faster.

Specifications

• Brand: Aquaforest (Poland)
• Format: 50 ml dropper bottle
• Type: concentrated liquid iodine supplement
• Compatibility: SPS, LPS, soft corals, tridacna clams

Why choose Aquaforest at ReefSolution

• Iodum 10 ml — the trial format before large-bottle commitment.
• Micro E 50 ml — concentrated heavy metals for mature SPS.

Frequently asked questions

How long does the 50 ml bottle last on a 300 L tank?

At 3 drops per day (300 L at 1 drop/100 L), the 50 ml bottle covers about 333 days — nearly a year. On a 100 L tank (1 drop/day), it lasts about 3 years, but Aquaforest recommends the 10 ml format for those small volumes to keep the iodine fresh.

Can Iodum turn yellow over time?

The solution stays stable if the bottle is sealed and kept in the shade. A slight color drift after several months is possible but doesn't affect efficacy at recommended doses. If the solution turns very dark or cloudy, replace with a fresh bottle.

Can I dose 50 ml Iodum with a dosing pump?

Yes — but the daily dose is very small (just a few drops), which makes manual dosing simple and reliable. A dosing pump helps mainly when spreading over multiple daily injection points, otherwise once-a-day manual dosing is just as effective.