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Yeah, that is definitely the downside. I figured I'd cross that bridge when I got to it. I never shutdown my pool, so I'll just have to see how dirty it gets. Hopefully with borates, the white stuff will be kept to a minimum.

Well, just for completeness, I wanted to come back and post that I finally got my liquidator to work well on low flow (filter pressure of about 2-3 psi). The main things I had to do was to use the 3/8 line upgrade as described by Rabbit in this post...

Nitedr, regarding your CYA level, once you get the pool under control, running a higher CYA level will actually lead to less chlorine use due to solar degradation than the 40-50 you were shooting for. The downside is having to run a pretty high FC level if you need to shock and it won't drop as...

Chuzie, one last thought is that to keep your FC levels more constant, you'd be better off keeping the chlorine level low in the chlorinator so a given drop of the chlorine level corresponds to a smaller percentage increase in the water level. As a simple example, imagine the Liquidator is...

I'd say just fill it regularly enough (weekly) that the volume of the water doesn't fluctuate too much. Honestly, I haven't gotten mine dialed in fully yet, so can't comment with any authority.

Chuzie, it should change because as the chlorine drops, the amount of water in the Liquidator goes up, so consequently even if the same amount of chlorine is "skimmed" off of the chlorine layer, it will be more diluted

According to the pool calculator, a quart of 12.5% will only raise your FC 1.2 ppm. If you have an uncovered pool getting a lot of sun you may be losing more than that with a decent FC level. On the other hand, you mention your FC is only 1.8. Have you done an overnight chlorine loss test...

I see you've tapped into the puck chlorinator and that may be the cause of your problem. Maybe there's insufficient pressure to generate flow, especially since it's only getting 50% of the return water. You know your OUT is working, because if you let the water build up and then open the...

Thanks for the feedback. I'll be running a Liquidator, so hopefully I should be able to stay above the min recommended level next year without too much trouble.

I've had black algae in my pool for as long as I can remember. Every year, when the water gets cold, it goes away, and every year, when the water warms up, it has come back (before using correct FC levels). If I make sure my FC never dips below target levels for my CYA, will the black algae be...

Hey Papahemi, down in Orange County, there are no restrictions in draining and filling a pool (yet). The cost is covered in the fill cost of the water bill. I wouldn't do a pump and fill at the same time. From what I know of how this works, you will use less water overall if you do one big...

Thanks for the feedback.

Yellow/mustard algae. Apparently it's more resistant to chlorine.

Thanks for the feedback all, I was one of those people who just dumped in pucks, had ridiculously high CYA, and wondered why 3ppm wasn't cutting it. At least until I found TFP. I would probably not go too much higher than 80-90 due to pH measurement issues and the inability of shock levels to...

Robbie, the data shows that all pools benefit from CYA levels greater than 50, not just SWG. In fact, pools with daily dosing and thus greater swings in FC benefit even more with higher levels of CYA.

I created another version for continuous feed systems like SWCG, Liquidator, & Stenner pumps based on the hourly rate in your table. I assume this hourly rate only looks at peak loss, but I would think the relative hourly loss between different CYA levels should be the same for other time...

It's funny, I somehow missed that post you just linked when going over stuff here, but I did find those numbers online quoted in a different forum. Here's the chart for those numbers, updated using iterative calculations to account for ending at the desired FC level instead of starting there...

So I've been reading a lot of the information on the relationship of CYA to FC and the recommendations that higher CYA levels may be beneficial to pool owners that get a lot of sun and thus experience a lot of FC degradation. I haven't seen anyone do a chlorine consumption comparison of the...

I moved into my house 12 years ago and had never owned a pool before. I bought a simple test kit and used the pucks with floaters. I didn't know it, but my CYA kept rising higher and higher every year, and so I had to use more and more pucks (and floaters) to keep my pool clean. I didn't...

I moved into my house 12 years ago and have used pucks with floaters the whole time. Basically as the CYA went up (when I finally got the nice test kit, it was around 400 or so I think), I had to put in more and more pucks. Also, I was using the cheap tester kits, so 5 ppm of chlorine is...

Good thoughts. Btw, I got in touch with PST who sells the 3/8" upgrade kit and Bruce was extremely helpful in trying to get me up and running successfully. He was able to provide the technical specs of the check valve they use as well as some other tips. The link to his item on the John...

Thanks for chiming in Dave. Because of the 2" plumbing after the filter, the pressure is very low, like 2-3 PSI. On high it only is at 7 PSI if I'm running my pool cleaner and both spa and pool outlets are open on a clean filter. The pressure side LQ tap is after the filter, before the...

Hey all, I just got a liquidator after switching over to liquid chlorine, being tired of burning holes in my pool covers and, and wanting to be able to avoid daily maintenance. Here is a picture of my installation. It is 1 1/2" pipe into the 1HP/.5HP dual speed pump. It's on a flip...