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We have a low pressure bubbling boulder water feature that i would like to use the PB4 to supply water to via a jva controlled 3 way valve. The eye of the impeller is 10 inches below the bottom of the skimmer. Question 1: The pump would need to run without a forced supply from the filter pump...

We just had a light niche inspection fail because the inspector read on 3ms data sheet that the compound is for fresh pools and fountains only. I have spoken to the head inspector and he stands by his field inspectors opinion that the 3m product is not suitable. SCP distributors cannot find an...

After reading the info here and having a couple of conversations with onbalance, I've decided to try a bicarb start for the medium grey plaster pool we are plastering Tuesday. It seems that it would result in a smoother and longer lasting finish. Over the years we have used the traditional and...

After a few years on this site I figured it was time to introduce myself with a less confusing username. I first started building pools as a summer college job in 1971 and was captured into the excitement of this industry. After being a subcontractor for a couple of years, I started Artesian...

An old friend just told me this story that I had to share with all of you pool geeks. He just built an 80 foot diameter by 20 foot deep above ground pool indoors on an existing 10 inch slab of concrete. It took them 32 days to build the pool and 8 days to balance the chemistry. It was used...

I have a customer that has a 5+ year old Polaris Auto Clear Plus that is performing well and appears to be in good shape. The problem is that the cell housing has started to leak where the 10-12 screws hold it together and about 4 of the screw tabs of the cover plate have developed cracks. Can...

The discussion about draining, in Worst pool yet? Can I get this clean?, became too technical for the Algae - Prevention and Treatment area, so it has been moved here. JasonLion Chemically cleaning that pool is possible and all of the cautions mentioned should be heeded, however if we had to...

If you have an offline trichlor erosion feeder (connected via tubing) and an inline SWCG cell, would it matter where the feeder injection point was in relation to the SWCG cell? upstream? downstream? Is there any chemical reactivity? to consider for optimum performance?

I was wondering if there were any discussions on this site about the potential for high levels of cyanuric acid to deteriorate plaster or cementitious surfaces in a pool. I probably didn't search the best way and maybe Polyvue or someone else can post a link. Although not documented, it seems...

Yesterday I was talking to a plasterer about different finishes and when granite came up he said there was a lot of iron in the mix. We went to his office opened up a bag and ran a magnet over the mix. To my surprise a substantial amount of material was collected with the magnet. What does this...