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This is the type of backwash valve that I have (push/pull piston). It's over 20 years old. Lately, it has become very difficult to unlock/lock and push/pull to backwash. It seems like the piston o-rings are sticking to the PVC pipe. Lubricant doesn't seem to help. I actually sheared the...

Regarding high CYA levels, for folks that have high water cost or have restrictions on water supply that prevent draining/refilling, I'm wondering if it is possible to intentionally introduce the type of bacteria that converts CYA to ammonia, then when that's done, SLAM to get rid of the...

I've been using the TFP method since last year with great results. Thank You. When I started TFP, my TA was 100 ppm but is now down to 60 ppm, due to aeration/acid addition cycles. I thought as my TA became lower, that I would reach a point where pH would be stable and quit rising (the happy...

I'm near sighted (20/200) and like to use swim goggles. I didn't realize that I could get prescription ones, until I found these at Amazon. They work great, and now I can see the backyard oasis clearly when swimming. Just thought others might like to be aware, if not aware already. I'm not...

I ran across this US Patent for removing CYA from Pool Water. (This is not related to the Bioactive threads) Here's a link http://www.google.com/patents/US4793935 And here's a Wiki article that has some information about melamine reacting with CYA to form an insoluble precipitate...

Most of the envelope icons are blue, but some are black and some are red/orange. What do the various colors mean?

I found a lot of info on YouTube on building a Laminar Flow Nozzle, so I decided to build one. I installed it on my deck, overlooking the pool. It's a closed loop system. The pump is in the yellow bucket on the right and water goes through the PVC Pipe at the bottom of the deck to the Nozzle...

Here's the scenario: Home water supply is cut off due to broken pipe and plumber can't come for a few days. Would it be safe to use pool water for drinking/cooking if the water is balanced e.g. CYA=80, FC=9, CC=0.5 or less, and other parameters also balanced. If not a yes/no question, what...

When I was living in Singapore a while back I took this picture of the pool at my apartment. Notice how it is designed so that the water level is at the surrounding deck level. The water drains to grates (red arrow) which surround the pool. You can see that the reflections at the waterline...

Hi, I just joined TFP this season and pool is looking great. TFP is an awesome resource. Thanks I thought the information below might be helpful for some of the forum participants. I recently bought 1 jug of 10% Liquid Chlorine that was actually 4.5%. It had a 2013 date code. I now am very...

I've had this pool for 20 years and still don't know why there is a hose bib installed between the pump outlet and the filter. Can someone please tell me it's purpose?