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Tablets and Granules will increase your CH but shouldn't be going up that fast even with shocking, given you've got low CH in your tap water this should keep your CH in check due to dilution. I think you need to head over to pool school as it sounds as if you have been 'pool stored' in order to...

Hi, 250-350 is the recommended, so your not far off the mark. What is the sanitiser in use? if your using tablets/granules these will increase your CH so you might not need to do much. You also need to test your source water to see what it is adding or taking away from your pool chemistry...

Hi Andrea, make sure you familiarise yourself with Pool School category.php?c=getting_started If you have further questions post them in a new thread on "Just Getting Started" Regards Stu

Lovibond Scuba is a mini photometer, and not really worth it's weight as it still only measures FC and TC using DPD, so the range is not that high. I would urge anyone considering it to strongly think about an MD range instead for the extra they are far superior products. Shame Palintest have...

FAS-DPD Test Kit is available directly from Palintest in the UK (It is a UK company after all!) there's just not much demand for it because 1) we don't have much sun so don't use much CYA based chlorine products or 2) most pools are indoors and the teachings on this side of the pond have been to...

Fraud we will need to agree to disagree then, you will likely not find anyone that would endorse the use of strips cept for testing borates on this forum.

Ouch, I think most peeps here would rather you ditch your test strips and test with your kit exclusively, test strips are notoriously unreliable and will likely cause you confusion when they do not agree with your test kit results

Don't know about it in a liner pool, that being said it may well save someone's life at one point, I'm very pro safety ledge, you will also find it increases the available standing room in your pool when you have your first pool party!

Yes, you should expect to see CCs popping up, your lucky you regularly have CCs of zero, some pools and almost all indoor pools never achieve this

250-350ppm for you but test your source water first before going out and buying some! If your filling with CH higher than what your at it will rise itself, Calcium Hypo is very useful when CH of your fill water is sub 100ppm, otherwise mabey not so..... Over-riding message test your fill water...

Yes, there is Calcium Hypochlorite, but much like any chemical it has it's benefits and it's drawbacks, namely that Calcium Hypochlorite increase Calcium Hardness levels in swimming pools, great if your source water has low CH like mine, CalHypo is a better sanitiser than bleach round these...

:wave: Welcome to TFP Much like so many other people you have been "pool stored" into buying stuff and believing what they tell you. 1) Ditch the pool store tests, buy the TF-100 test kit from http://tftestkits.net/splash-page.html then you control your pool not the store (if you have test...

Re: My daughter is complaining that her eyes hurt after swim Goggles are a good suggestion, you could try a higher pH, around 7.6 everyone's eyes are slightly different, but for the most part are around 7.5 I think opticians/ophthalmic surgeons can check this with a litmus paper type test if...

Sounds like you just have some undissolved particulates if you have been vacuuming to filter each time does it poof into smoke when you hit it with a brush or the vacuum? once the water is still it settles on the bottom of the pool, next time vacuum it to waste very, very gently or it will...

^Bang on the money Palintest Pooltest Professional 25 Lovibond Poolcontrol 9in1 Are the benchmark devices, I own a Palintest 7100, lovely piece of kit, easy to use, just the price of the re-agents which is astronomical for genuine Palintest re-agents, Lovibond prices are far more comfortable...

There's nothing for your water to erode at, and the metals (for example your heat exchanger) won't erode/corrode until your water is far more negative, for the purposes of a liner pool your water is considered to be balanced. That being said there's no harm in maintaining CH levels if you feel...

Don't see a backwash line for the filter, think I would of opened the inline feeder lid and let the water drain from there as it can be controlled

Overnight you lost just over 1ppm FC so that's not a biggie especially in an un-stabilised pool, just maintain your shock level of between 8-10ppm and allow it to burn off the CC's till they are reading 0.5ppm or less and you will be good, remember the dogs will be fine swimming in FC at your...

TA acts as a pH buffer so don't be surprised by massive swings in pH until you have it increased again (low TA allows pH fluctuations, high TA makes pH hard to shift) Don't be surprised if your CYA is non-existent when you finally test, but you will have a fair idea with how well it is holding...

Yes you can indeed, remember to shoot for lower than your target, you don't want to go higher than your target then have to start draining to get it back down, for example if your shooting for 60ppm shoot for 40-50 to start then top it up a week later.

Welcome! :wave: Did you achieve your CYA test using a dilution test of 1:1 fresh water/pool water? (If the answer is no test your CYA using the dillution method then double the result to get a more accurate result) If your CYA is trully 110 that means your shock level is around 44ppm! you...

Go for it then ;-) I would suggest to confirm your results regularly with the TF100 pH test, which will let you know if it requires re-calibration

Good quality pens do work very well, and give more accurate results than comparator results, in the same way a good quality photometer gives more accurate results also. I am not against it, in fact I have a medium price pen, but use it infrequently as I have a high quality photometer that does...

I presume you are using a photometer with those results? I would be working off the Fibreglass Recommended levels for your pool which are FC 3-7 pH 7.5-7.8 TA 70-90+(120) CH 220-320 CYA 30-50 (Indoor 0-40) Shock level for 7 CYA is around 8-10ppm FC Keep your FC around that level until it...

depends on the quality of the pH pen, the cheaper ones I would strongly say should be avoided or calibrated regularly, the more expensive versions are more accurate than comparator (colour matching) if maintained correctly. For home users a good quality comparator test is easier to maintain and...

You have soft surface water, very similar readings to here in Scotland and Calcium Hypo is ideal for soft water as rising CH levels is not usually a problem (the Cal Hypo is the only real source of CH increase), you could switch to bleach but I'd be sticking with what I'm using unless CH gets...

Is your source water soft, with low pH, TA, CH? I ask because you are using Calcium Hypochlorite (You can test your water which helps you understand the effects of adding supply water to your pool. As for the CYA it is not essential in Indoor Pools but definitely helps maintain the Chlorine...

:wave: Welcome! Your numbers don't look too bad! and won't take much to get a hold of. I note you really only need to bring TA/pH down slightly and increase your CYA to the recommended 70-80ppm for SWG Pools, everything though is IMHO safe to swim, TA can be brought down gradually as you see...

^Ditto (especially pictures!!), if you are using "something" that dissolves the CYA granules before they enter the 'Body of the Kirk' (ie your water) (for example a sock) then you don't have an issue with backwashing, following the Pool School instructions, it's only if you add the granules...

Weclome! as above, we need to know what type of Chlorine Granules you use, it may be that you are using Di-chlor granules which have been steadily increasing your CYA level, or you may not have any stabiliser present if you use Calcium Hypochlorite. Do you have a way of testing your Cyanuric...