I had this issue was undoubtably high phosphates.
Either of you have a sump?
If so build a dig algae scrubber... I put one on and have had no algae in tank at all since doing so. Every couple weeks I scrape off about a tennis ball size amount of algae from the scrubber. Is crazy and my quality is much better now also for my Rays.
Either of you have a sump?
If so build a dig algae scrubber... I put one on and have had no algae in tank at all since doing so. Every couple weeks I scrape off about a tennis ball size amount of algae from the scrubber. Is crazy and my quality is much better now also for my Rays.