Second round of dosing and can already see the water is clearer. The algae growing in the 75 gallon cichlid tank seems to have slowed down. Normally I have to clean the glass by now but it seems like Nualgi is working in just the first dose! The 30 gallon planted tank is showing reduction in green spot algae on my anubias and all the fish seem more active! Update and dose 3 coming next weekend.