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I am about to switch to a variable speed pump to replace the single speed I have now,just looking for some opinions on which brand folks have had the best endurance and performance with.Also maybe if someone could briefly explain the relationship between pump rpm and feet of head on the pump,Ive...

I have been looking at replacing my pump and just had a question about the variable speed pumps.Looking at the performance curves it seems to me that if you have more than about 20 or so feet of head,the low speeds are pretty much useless,am I looking at that wrong?

I have a question about testing your cya, do you fill the vial until the dot can't be seen at all, or until it just starts to fade out? Seems the more I look at it, sometimes I think I can see it and sometimes not...

most of the bottom of my pool has a light tan stain that brushing doesn't seem to effect,it seemed to get a worse after several days of slamming the pool,is there a certain way i should add the bleach?I have just been pouring it in,and any ideas on removing the stains?

I am considering swapping to a swg, does anybody have any experience with the Aquapure ei? It appears too be a pretty good choice for my pool, rated for 35000 so it would be able to run at a low rate,I just wonder about the cell life and reliability, there aren't many swg reviews anywhere that I...

First, here are the numbers FC 13 Ph 7.6 Ta 125 Cc .4 Cya 65 Ch 70 I've just moved in a new house with a pool, it's plaster,16500 gallons, tablet feeder that has been fed with tri clor tabs for years, the cya was over 100 and I couldn't clear up the water so I drained roughly 5700 gallons and...