I have a 20,000 gallon in-ground vinyl pool. I do not have the specific readings but the pool store stated that everything is in line with proper water balancing. I will have to take another sample and post the readings you requested.
In the mean time, what can I do now to start eliminating the algae without a properly operating filter?
are you using the bump handle after every few hours? My DE filter usually starts getting a high pressure reading every few hours when dealing with green algae. I then have to bump it and restart it for the pressure to temporarily go down.
Once most of the algae is gone, I backwash and fill the filter with fresh DE.
I have a Hayward DE 3620. I don't think it has a bump handle, it has a side monted multiport valve.
Would vacuuming to waste be beneficial?
"Don",Originally Posted by donjoarm
First, I am not a DE filter guy...I have sand. My assumption is your filter is working fine.....it's simply getting plugged up with algae.
Even if my assumption is incorrect, you have a green pool and Cl is the best cure.....lot's of it.
Without you posting those numbers, this is a little bit of a guess, but a pretty safe one. Put in 4 gallons of 6% clorox bleach all at once in the late evening. That will bring your 20k pool to 12ppm of Clorox and start whacking that algae. Now you need to keep it at 12ppm 'til your water clears and the only way you can do that is to test your water.
That'll give you a 24 hour head start but before we get too detailed on what to do next you'll need to help us by posting those tests.
Meantime, your pump should be running continuously....that'll help you filter out the dead algae and start clearing your pool.
Others will be along soon to advise you on your filter but it sounds like it's okay.
vacuuming to waste will not be helpful.
Dave S.
OK, I've got some numbers. I added 4 gallons of bleach last night.
FC .5
TC .5
ph 7.2
CH 200
Alk 70
CYA 100
I also have another problem-Air in the pump housing. I am trying to track down the source of that problem!
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