nige2473 said:
its 180 ltrs with 80 watts light dosing 2ml of tropica plant nutrition plus every day thought it would be a bad idea to over do it early on
your problem is definitely no ferts. TPN+ is ok for low light tanks, but youre running about 2wpg.
light > co2 uptake > nutrient uptake > growth.
at the moment, you have the first 2, expecting the final growth stage, but you have nothing for the plants to 'eat'. So instead, the algae, which needs far less of everything, is winning the fight for nutrients. For the algae to be 'beaten back', the plants need to be out competing it.. with no nutrients to provide building materials, that aint never gunna happen.
Have a read of this article
EI Ferts. This is where you need to start
