mrmodo

That looks like a design floor to me ...perhaps the hose can be rerouted inside the hot tub so its doesn't freeze. Also have less showing on the outside to prevent it blocked externally?

Hi Yes, we're in hard water area and I find the trick is using the right amount of dry acid - too little and it make's not different, too much and you overshoot. Read other posts on here It's not clearer TA does this, with the need for higher quantities of dry acid required for high levels of TA

From what I understand here as long as you PH is stable at the correct level 7.4 - 7.6, then your TA level is fine

Thanks (again) MPurcell I didn't realise pH+ increased TA! Always thought it was lowered with pH- (dry acid). But only TA increaser or baking soda would increase it

Hi MPurcell Thanks for the reply Yes, I think I understand the aeration method now. Initially, I was using the calculator to work out how much dry acid is required to reduce the desired level of 7.5, rather than 7.0. I have never used the aeration method before. I live in a hard water area and up to now, I would balance the water on refilling whilst still cold. The TA level would generally always be high 180+. I would normally dose with a large amount of dry acid (approx a cupful). This would generally knock the TA down to around 80-120 which would be in the OK range on the test strips Of course, this would also send the water acidic. However, I would find that during the heat up the pH would naturally rise to a reasonable level. It could then be tweaked with pH adjusters to get to the right level.

Hi Guys Just thinking out aloud here I've been reading that aerating will naturally increase the pH of the water. Obviously, pH+ increaser will do have the same effect. Does using pH+ have any side effects? Thanks

Hi Everyone I've been reading the great guides on water care. I've been reading the one on reducing TA. I'm in a hard water area so always have a high TA reading. So with regards to step 2 on the TA guide. I'm using the sites http://poolcalculator.com/ and https://www.troublefreepool.com/calc.html The TA part will work out how much I require to increase TA. But to reduce it am I doing this right by 1. Entering current TA value and Goal e.g 300ppm with a goal of 60ppm 2. Entering pH value and goal e.g 8.0 and 7.5 It then tells me I need 1.8oz of dry acid to reduce the TA down to 60ppm which I then can following the remaining steps of adding half and aerating for 30 mins, etc (Note - This is for a 350 gallon tub) Does this sound right? Thanks