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Been a while but with same pool same equipment same chlorine method not lots to discuss but now Have Apera pH meter. Is cool, more fun than color matching with 82 year old eyeballs but... Water is cold, like 45. When I first put the meter in I might see 7.3. After sloshing around for a minute...

So a cold spell and temp water down to 31 and CSI down to -.30 so I bought some Arm&Hammer washing soda (85% disodium carbonate) did as per PoolMath and put in 16oz but ph was 7.7 and does not seem it went up I dissolved the stuff in water and dumped it in by the return what am I missing? thank you

Hi. Been a while. But then follow the rules and not much happens. Anyway. asked before but seeking confirmation (or 81yo brain forgot) In Seattle so do not close. All pipes underground or indoors. Now a cold snap. Pump running but even so ice on the surface. Maybe ½" thick. I should 1)...

Hi. So we have freezing weather and snow in Seattle. I have a skim of ice on the pool. Should I do something to get rid of it or is it harmless and I can just wait for the rain to return? Thank you Loren

Hi When in the pool the steps are not very visible and is easy to sort of stumble into them. Bump a toe or knee. Is there a way to mark step edges when the pool is filled? Tape? Thanks.

Severe shortage of liquid chlorine around Puget Sound. Cities are scrambling. I have 14 bottles and CYA is 40. Pool Math says FC min 3 and goal 5-7. Essentially no one is swimming (all off to camps) and pollen season over. To maintain 5-7 takes about 1 gal every other day so 14 bottles about 28...

Hi Tis cold and backwash slide valve stiff. Should have lubed in August but did not. And with rains will need to back wash from time to time. Is Pentair WC-212-136D Before removing valve, do I need to release air / drain water or anything? And is there a grease that tolerates cold weather...

Hi. Old old pool (from 1979) with surrounding cement slab covered with slate. Some slates are always loose, mortar gave way. Also hot in sun (when we have sun). Am tired of the whole thing. What are the modern surfaces to cover cement slab round pool? Thank you

Hi Been using liquid chlorine for years but now suppliers kinda low so… Since CYA is low after all the winter backwashing thought to try the Rainbow #320 Directions say 1) turn control valve to 0; shut off pump 2) wait one minute for water to drain from Rainbow 3) turn on pump; check valve will...

Hi Do not close in winter out here so... Do I keep on with the same pH range? Searched but did not see the answer for pools not closed. Thanks.

Hi The TFP method works well, have not had algae bloom for years. Do not close in the winter and water goes down into the 30s. CSI includes water temp and so adjusts for water temp but FC is not in the CSI. I would like to think I can run FC much lower in the winter, save a little money. Is...

ok I give up how do I see threads which I am watching and for which I have signed up to receive emails when there is a new post

Hi So when I close Poolmath I see this message But it does not say how to save my changes So???

We have ND (not detectable) iron in the water but eyeballs / baskets etc turn yellow over time so must be some. When we had the pool resurfaced contractor put in Orenda SC1000 to suck up metals in fill water SC1000 bottle says maintenance dose is 6oz/10000 biweekly and is needed only in the...

Hi. Pool resurfaced and discussed in another thread. But new idea... Mostly we have accepted the resurface as is much better than before but... The most problematic is the steps. What if we drained to below the steps and painted the steps. Is painting step surface good idea? Bad idea?

Have a stiff eyeball (on the pool that is). Tough to adjust. And water is cold. Is there an eyeball adjuster thingie with a long handle?

Have new water line tile and now obsessed with removing mild efflorescence from new grout.:geek: Muriatic acid is cool but what device to use 1) need sponge to hold the acid 2) need sponge that does not degrade in the acid 3) need one side to be abrasive to scrub a little 4) and maybe a handle...

Hi TFP contributions tax deductible? What about the "no goods or services" clause?

So pool is not closed in winter. Is 25k inground. How low can I let the water temp go before turning on the heater?

kids had to choose today; to swim or ski

Hi CYA is zero as we are starting up after new plaster. Had an algae bloom that cleared with SLAM, passed OCLT. Now letting FC drift down. Pool looks fine. However last evening FC 7.5 at 4 pm This AM at 5:30 am FC 5.5 Assuming no algae, and with no CYA, will FC drop overnight? Thanks

Hi so new plaster; fill started 11/7 ended 11/9 so today is post fill 16 builder added 3qt SC-1000 on 11/7 at start of fill for metals for unclear reasons builder added another 2qt SC-1000 on 11/15 and thereafter could never get FC to rise today have algae bloom but TFP Start-up New Plaster...

In Pool Math by chlorine there is the word "trade". What does that refer to? Thanks

Hi So am having the old pool re-plastered. We like the guys, we like the color, we like the startup procedure. But... The plaster is quite streaked. See pics attached. I am aware that plaster is not paint, is an imperfect media, but... Is this much streaking "normal"? Thank you.

Hi Am fiddling with PoolMath app and the Orenda app. Is fun. Likely dumb questions but 1) why does PoolMath screen say Calc... CSI N/A? what have I missed? and 2) where do I enter water temp in PoolMath app?

Hi So re-plastered re-tiled the old pool. Going Ok save for some expansion joint grout/caulk that failed and will need redo and their tent kept collapsing (latter was sort of funny). Contractor uses Orenda mobile app and I guess the Orenda plans and he has warranty so am co-operating. on day...

Hi Am having pool re-plastered. 30000 gal supposedly (funky shape so hard to calc). With some rough calculations estimate will take 1.8 days to refill. Is that too long? Is that bad? Or Ok? Thanks.

Am resurfacing the pool. Installer uses Orenda Technologies SC-1000 Scale and Metal Control to deal with metals during startup. Company web site does not reveal contents. Any experience with this? Any good? Any bad? Thanks.

So read today that Hawaii has banned sun screens containing certain chemicals from beaches. Because they damage coral reefs. Now is true that my pool has no coral reef and Saratoga Passage where our drainage goes does not have a coral reef either. And I have a few people in a pool, not...

Hi So I put on skimmer socks and seem to work Ok. But still there is a small amount of stuff caught in the pump basket. And the stuff looks new; not like old stuff that made it to the deep drain and was sucked in. If skimmer socks are working how can new stuff get into the pump basket? Why do...