Northstar24
The Tang Herder
Your algae is definitely being caused by the elevated phosphates. I would also guess that you actually have nitrates even though they are reading 0, as they are being used up by the nuisance algae.
With no livestock and no feeding, the phosphate has to be coming from somewhere else, either your rock (lace rock and some dry rock has been known to leech out phosphates) or your source water are my two guesses. I would check your source water for phosphates, if that reads 0, it pretty much has to be leeching out from the rocks.
If that is the case, you'll need some sort of phosphate export, chaetomorpha or caulerpa and possibly even some sort of reactor with phosphate removal media
Check your source water and report back
With no livestock and no feeding, the phosphate has to be coming from somewhere else, either your rock (lace rock and some dry rock has been known to leech out phosphates) or your source water are my two guesses. I would check your source water for phosphates, if that reads 0, it pretty much has to be leeching out from the rocks.
If that is the case, you'll need some sort of phosphate export, chaetomorpha or caulerpa and possibly even some sort of reactor with phosphate removal media
Check your source water and report back