Iron & Potassium Combined Solution 500ml

In many planted aquariums — particularly those using the EI method or running high-growth stem plant layouts — iron and potassium are the two nutrients most rapidly depleted between dosing sessions. Combining both into a single solution reduces the number of daily or weekly doses required, simplifying maintenance without sacrificing precision.

The iron component uses DTPA chelation, stable up to pH 7.5, while the potassium is supplied as potassium sulphate, avoiding additional chloride. The ratio reflects the typical iron-to-potassium demand of high-growth planted tanks, making this a practical everyday product for experienced planted tank keepers who have identified these two elements as their primary limiting nutrients.

The 500ml economy format provides several months of dosing at three times per week in a 100L aquarium. The clear solution does not tint the water and is compatible with all macro fertilisers and other additives.