Drifter,

Iâ??ll use my tap water as an example. As it comes from the tap itâ??s about 6.8 â?? 7.0 depending on the time of yearâ?¦â?¦.however as it sits open to the air it outgases. The out gassing process is a process of de-acidification. That means that the Ph will continue to rise. My tap water will rise to well over 8.

Same thing happens in the buckets and controllerâ?¦..but faster because the airstones outgas (or de-acidify) the nute solution at an accelerated rate.

I just included this so that you would understand that your tap water will rise in Ph as it sits open to the air. Might just solve a mystery or two.

Loads oâ?? luck,
HMR