i took a look at earlier today and there was a thin film of algae on it. is there anyway 2 save it. some tank details - 150g, three 250w 14k HQIs, ammonia/ nitrite/ nitrate/ phosphate 0, ph 8.3, calc 400, dkh 9, mg 1270. thanks for reading and sorry about the question being split in 2 im on a...