Hello all. Nice forum.
Thought I would join you as I’ve problems and it would seem there is a pretty good chance of getting things resolved here.
From browsing around I have got the message that reliable home test numbers are imperative. Would love to oblige…BUT I am in France and apart from dip testers and good old OTO not much else is available!
The readings I’ve got below come from my pool shop (sorry) – from their Bayrol centifugal test machine . Even if acceptable it is not something I can do often. If we can use that for starters I’d be happy otherwise I’ve really not much else to go on!
Readings are in mg/l.
(Pool 40m3 (+/- 10k us gall.) IG concrete tiled with SWG, sand type filter filled with crushed glass media)
Pool has been cloudy and has not responded to gentle cl addition. Slamming as I write with 70% cl granules with no stabilizer at 31 FC based on CYA of 75. (Added 1.3 kgs as per pool math). Water looking good (1st overnight). (SWG is functional but off, water limit too cold presently 16°C (60F) so everything is being done manually.)
With a dip FC and an OTO tester, kitchen jugs and measures to dilute pool water any help to steer this thing ….or am I on my own?
TAC at 45….any advice?
Regarding CYA. During the summer the pool runs with SWG. The SWG is 2.5 times oversize – long story. Pool is 40m3 SWG designed for 100m3. Can I not run at lower CYA levels given there is a good amount of Cl produced to offset effect of sunshine? For and againsts?
Also I have a tanning shelf (hollow box shape built in concrete, filled with light expanded clay beads fwiw) added non structurally to concrete shell. To avoid problems of water seepage, pressure difference, sealing etc the inside of the box is open to the pool via 2 small (1”) holes top and bottom. Water can enter and air can escape at leisure. The physics of this box arrangement are pretty straightforward, and seem to work. What is less clear to me is what is going on inside from the POV of water chemistry – is there a risk of some nasty contaminants creeping out into pool, as the stagnant water matures? Can I just block off the holes and leave it all for my kids to uncover in years to come ?
Any comments much appreciated.