The lights need to be pointing directly at the screen not from above . It will not grow right like that . Also while lighting from one side will work two sides will be much more efficient . Fishdreamz it sounds like the screen wasn't maintained properly . If you slack off on the cleanings it has the potential to make the water a bit hazy. Quick fix is to just clean the screen a day earlier .
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Feed your Filtration
Give it to Porc Chop he'll eat anything!!!!!
"This is my tank and these other fish just live in it"
^ Quoted from Porc Chop^