Recent content by DavidJW

Re: chem targets for covered pebble sheen outdoor salt ORP I think you've picked up some of the issues yourself - you are aiming at very narrow bands that, in practice, you likely cannot test for reliably, let alone maintain. I use a Palintest colorimeter based test system aimed at...

The first of your photos has a pump at the left, with a couple of valves on the suction side of the pump in the left foreground. These two valves will select various options of skimmers and main drains to pull water from the pool and spa - it's a case of running the system and figuring out what...

Hi all, I've been lurking for a while, enjoying the common sense approach espoused in this forum. With a background in academic chemistry until my health collapsed in 1993 due to chemical exposure from working in an organic lab with defective fume extraction, I've particularly enjoyed some of...