Review on 💧 Brightwell Aquatics Kalk+2 - Enhanced Kalkwasser Supplement 450g / 15.9oz by Michelle Hall

I have this in a limestone mixer mounted on a dosing pump to ensure constant dosing for stable parameters. It works to an extent and the magnesium seemed dosed but still needed supplements. As consumption in my aquarium increased, I had to add 2 parts to the dosage. A friend recommended me to try BRS pharma kalk and of course the potency was much higher with BRS kalk where I am currently on 2 parts and may not need the 2 part dosage at all. Sorry Brightwell, but there are better options, and according to BRS ICP tests, there are cleaner options as well.