bubbles in water

[aylad]

But "within range" doesn't really mean anything. My fear is that your Cl is too low for your CYA level, and it won't take long for algae to develop under those conditions.

Janet

[cds13]

Hi Janet, sorry for the late reply.

I figured out the problem and we've been enjoying the water, I completely forgot to reply...

CYA is 30, and FC was 3-4. The prob wasn't the chemicals. It was actually right at the pump. The pipe fitting that screws into the pump needed to be tightened, I could see a continuous stream of little bubbles being sucked into the pump window, and it was filling the sand filter with air (so much that I could bleed out air from the sand-filter for 30-45 seconds every day before water came out...) All that air was being pushed into the pool water.

Anyway, I tightened the fitting and inspected the glue at all the pipes leading INTO the pump for any tiny possible air leaks. Now, no air in pump window, and no air in pool

Water looks like sparkly glass, too bad it's rained for 3 days non-stop......

Quick Question- after shocking the pool (liquid chlorine in the range of 10 ppm), what is the acceptable range of chlorine is it safe to put the solar blanket back on the water without doing damage to the blanket?

[PoolDoc]

Quick Question- after shocking the pool (liquid chlorine in the range of 10 ppm), what is the acceptable range of chlorine is it safe to put the solar blanket back on the water without doing damage to the blanket?

It's more a matter of letting the chlorine finish, than it is FC levels alone. It's not FC that damages the cover; it's the volatile (can turn to a gaseous form) CC's that result was the high FC breaks down various 'goo' in the water. There are 2 reasons for keeping the cover off:
1. FC + UV (sunlight) are MUCH better at breaking stuff down, than FC alone.
2. The gases that form need to be released so (a) they are gone from your pool and (b) they don't accumulate under your cover and cause damage.