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congrats on the ht article, just read it.

tommy, adjust ph only AFTER you add your nutes.

i put a access hole in my dwc tote lids that i plug with a grommet or stopper when not in use.with this access hole i use a kerosene siphon to take 1 gallon samples of solution to check readings and add stuff back when needed.when i flush/drain i use this hole with the siphon and some tubing.if...