I have TMC substrate but do i need to does with ferts too? Aand am I right in thinking that that if I dose with ferts then I have to dose with co2 too to avoid algea?
Its the other way around, if you dose CO2 then you need ferts, if your lighting is low then you can get away with using just the micro nutrient ferts (no N&P).
Yeah that's the one but I'm unsure about dosing because the guidline is in gallons. I don't know if it's UK or US? I think it's prob UK but I don't know how many UK gallons 125l is. Do I really have to dose it every day?