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New filter, DE grids less than 6mo old had tears in a couple of the grids. Caused DE and sediment to flow back to pool. The DE on grids were coated with orange brown sediment that seemed to glaze over DE preventing anything to flow thru. Just replaced grids. Pool installer who replaced grids...

So is this dead algae or DE from filter? I'm not sure what it is? No one was in pool? & Still SLAM mode.

Backwashed yesterday, this morning, nothing black/dark on bottom. 🙂 But there was white/grey all over bottom of pool and spa. I think may mostly be DE, when I added DE into skimmer basket, I had the sock on at first. It all just clumped. So I had to mix with paint stirrer until I could get sock...

Thanks. In SLAM process now, best guess cause is well water when I top off, as even with the filter I put on hose, water still kind of murky. Also skimmer basket and skimmer sock are orangy/brown. Though both are better now than b4 I added filter. I added water today in anticipation of...

How long should i do SLAM for - as my water is clear, my OCLT test passed, and CC is .2? All the criteria to complete a SLAM is already good? so what would be suggested?

I only use pool grade DE. I added sodium thiasulfate once to lower FC a month ago (SWG high chlorine error on my part). Other than that the all I add is muriatic acid, and top off with well water, which is now at least ran thru hose filter (RV type). Oh and I have added pool salt when necessary...

From the pics would this be black algae? Dead algae? I don't see anything on walls, lights, etc, just floors

I also have mostly been using a manual spa vac, to suck this stuff up, not regular pool vac. It's quicker and easier to get most of it, so pool filter shouldn't be clogged with this stuff? And the gauge still ok, not at backwash level yet.

Did oclt, fc stayed same. Cc same, but pink seemed a slightly lighter, though is almost colorless to begin with for the cc test. Did not vac pool yest, pool floor looks worse. Last de change was April. Haven't cleaned filter yet, plan was to do so in Sept (6 mos), system is new. Will have to...

Hopefully signature comes thru w pool details. Tested today: Taylor 2006c Temp 85 Ph 7.8 Fc 5.2 Cc .2 Ta 100 Ch 340 Cya 0 Indoor pool. Orig truck fill, new fiberglass pool in march. I top off with well water, shallow well, originally for greenhouse makes pool murky for a day or so. I...

thank you

Yes it's residetial, thanks. Most info that I've read, and MFG recommendations all say not to have any CYA for indoor pool. I think i'm safer not to at this point. But i did start to use PoolMath, and it shows my SWG output. I just turned SWG back on last night on low setting to see how long...

It's an indoor pool, I haven't test for that, but the strips the pool builder gave me, Aquachek 4in1, show between 0 and 30-50. I did shock when first started pool and once back in march. I can test with kit if makes any difference, but my understanding is indoor pools don't need/ shouldn't...

I cleaned off the ring around pool with magic eraser, was brown/rusty colored and came off easy. white hard ring some of it came off, some still there, especially under water line. used magic eraser and green scouring pad. also posting this to make sure signature shows up. thanks.

Not sure why my signature not showing up, it's very detailed. I set it up a couple days ago b4 deciding to post once i has updated tests. So until I figure that out: Testing -taylor k2006 with agitator. Also taylor 1001. Indoor(rebuilt an old '30s greenhouse foundation with a metal roof...

Hoping to get some guidance and feedback: Indoor fiberglass swg pool, installed in March. Chlorine was way too high for 2+ months 10+. ( I kept adding water, and ma, and turning down swg, but never thought/knew to shut it off). Ph (8+) and alkalinity (225) was high too. Nothing I did made a...