Recent content by skybloke

"however I was trying to spend less on a meter" I've had good results using cheap chinese pH meters. In UK they state "ATC" (auto temp compensated) and come with calibration solutions. I keep that in a sealed jar for a few months. Used fairly regularly you'll get to know what result to expect...

Oh.... and I AM, most definitely, a supporter. By that I mean I pay annually for the app, which is world class!

OK James but have a look at post #4 which clearly states pentahydrate. £2 for 10g makes an awful lot of R-0007!!

With respect, I've been using dry acid for controlling TA and pH for nearly 20 years now and have no damage to tiles, grout nor stainless metals. My TDS levels are low (presently at 400ppm). I also don't wish to handle liquid acids at that concentration. All my chemicals are manually deployed...

Hi Jake thanks for replying. Yes indeed I am talking about the Salifert kits which are cheap and very accurate for both TA and CH. If you follow my instructions above you should get great success. The water source is the deciding factor in how to handle your pool. Like you I'm UK (water source...

Thanks James but if you read post#1 you'll see I already have that information. This thread was started just to make people realise that there are other titration kits available should you not be able to get Taylor kits or simply find them too expensive.

Thought I'd update anyone interested (Matt?). I've used this method very successfully although it did require a fresh ST solution after a few months but this is pennies to do. I decided a while back to extend my search for affordable testing and looked at the CH test. Currently a 250 tablet...

Thought you may be interested Matt in how this turned out. I ordered the 10g sample of sodium thiosulphate. Dissolved 2.5g in 50ml distilled water and then topped to 100ml in a clean air-tight jar. Hope it stays stable for a while. Read something about adding a tiny amount of sodium carbonate...

Thank you for your replies. The product is listed as "Sodium ThioSulphate Pentahydrate 99% Photo Grade/Aquarium dechlorinator" so I think that would be good enough! I deliberately didn't declare in my first post but I have ordered a Marine/Aquarium Alkalinity test kit that claims 100-200 tests...

One for the chemists please! :) A bottle of Taylor R-0007 reagent in the UK delivered is approx £15 for 60ml (2oz). That's nearly $20! R-007 is a N/10 solution which (I'm no chemist) on investigation means 24.8g sodium thiosulphate(ST) per 1000ml or 2.48g per 100ml. (Stop yawning at the back!)...

I gave up on my Hayward chlorinator when the seal went again. Rather than remove the whole thing and rework the pipework I simply removed the black feed tube from the saddle fitting and placed a small plastic plug (the red ones used for car battery vent plugs fit perfectly!) into the end and did...

Looks like a really nice indoor pool! Indoor pools have additional problems in that you need to control the environment as well. That means air temp and humidity. I'm UK so HVAC warm air and dehumidifier is essential. The problem is keeping the room warm enough and the air dry enough so one of...

Ditto all the above. I have used the cheap Chinese pH/TDS digital types (your second pic) with great success. Re-calibrated yearly and checked a few times against a reagent test successfully. So I'd recommend those. Forget the needle type (first picture) as FC will be wrong as mentioned above...

I've run a similar sized indoor pool here in the UK for the past 15 years so thought I'd offer you my experience just in case you care to take "a step back" moment! I say that because I believe a couple of important questions need addressing first. Are you physically able-bodied and how much...