Originally posted by goldenboy
A friend of mine used tapwater to fill his tank. Of course there is algae everywhere, probably lots of phosphates, but I don't know if he tested for that. The question is, now he is using an R/O filter, will the algae slowly go away with better water quality? He has a cleaning crew, but his LR has a lot of brown diatoms on it.
the brown diatoms are due to phosphates.
If there is no fish in there and little to no LR then his algae may be lowered with ro/di. But probably not. And definately not when fish are added.
BTW there is no reason for tap water has to create algae. Plant life other than algae would have prevented the algae. Finally, if he does nothing but get rid of the algae with the cleaner crew or by manually removing the algae, he may have a very hard time getting future fish to live. IME plant live of some type is needed to support the livestock. So get rid of the ugly algaes and add other plant life, or allow the ugly algae to flourish. But get the plant life thriving by any means.