algae issue

[marcusbigdady]

What is the TDS in your TANK water and can you use a TDS meter to test your water.trying to track down my problem my po4 is 0 but it might get used up before it is detectable and my ro/di is 0...Thanks

 

[marcusbigdady]

^^^

 

[billsreef]

TDS in seawater is quite high, to the point that it isn't a worthwile measure to use for seeking out contaminants. What sort of problems are you having? Have you tested parameters other than PO4? What brand of test kits are you using?