Water chemistry

yes but really don't know tds just tells us there is some sort of solids that are in water. the ideal tds of water is 0 or at least close to that as possible..
 
All I know is you somehow have to use better water period for starters. Do at least a 25% water change and go from there. Get phosphate test kit as well.
 
Tony - just answered your PM, then saw this. Talk to Russ at www.buckeyehydro.com about what to do for your water. I agree completely that getting a RO/DI unit up and running will help a lot with your problems. As I guessed in the PM, your dry rocks are leeching PO4 and are probably the major cause of the HA. I would suggest a BRS reactor for the GFO. They work very well and are easy to set up and clean. Get one for carbon too. (I prefer 2 x single reactors rather than the dual reactor - much easier to regulate flow)
 
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