Hi, I've repositioned the spray bar to create a ripple and will leave that 24/7

My phosphates are between 1 and 5ppm, agree about test kits. I've just measured out K2SO4 and KH2HPO4 and will look at dosing a third less than high light. Have just dosed sulphate/phosphate so fingers crossed!

Will be increasing CO2 rate over the next few days, live tester is reading green, PH 6.8 and KH6 so pretty much around the mark I think

The algae is a green hair / fuzz, then for some reason I get a massive amount of brown slimy algae - this related to a missing nutrient?