The same high-quality 11% chelated iron as the 50g pack, in a larger size for better long-term value. DTPA chelation keeps iron stable and available to plants up to pH 7.5 — significantly more effective than EDTA-chelated alternatives in typical aquarium conditions.

At 200g this pack is suited to larger tanks, heavily planted aquascapes, or anyone who doses iron separately and wants a long-term supply without repeatedly reordering. It can be added directly to your micro bottle alongside the Micro Mix, or dosed as a standalone supplement if you want more precise control over your iron levels independently of your other micros.

Store in a cool dry place. Keeps well long term when sealed.