ei index

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    EI index,problem with algae!

    Hello All. My aquarium 540l {water 370-400l] 150x60x60 Dosing Ei index micro and macro 3x times a week{Every sunday 50% water change] - Only RO water { no added equlibrium booster] - Using 35 kg Seryiu Stones! Aquarium equipment: Lights 6x80w T5 tubes Ati sunpower unit {lighting 8 hours each...