New Pool but it turned Green...

All,
Bought a new 52" X 24ft round pool and just finished the deck (almost 6 weeks after the pool was swimmable) and started to notice the one side had a little green hue. One side of pool has tree cover (20%) (black walnuts) and the other (80%) is full sun. In short on occasion we have seen a walnut or two and some leaves.

Three days later the pool was then 50% green and two days ago it was not pretty and barely able to see the bottom.

Current Filter system is 1.5 HP Jacuzzi Pump with a CA9650 replaceable filter. There is a external chlorinator that is using 3 inch tablets and seems to be using about 6-8 every week or so. Filter element is the original installed filter as the guy at the pool company said if the pump exceed 15lbs pressure (gauge on top of filter) then change or clean the filter. The pump usually sits between 10 and 15 and never went above 15 to my knowledge. The pump seems to have a great amount of power especially on high.

Water tests show chlorine is low and PH is low (not existent) as well. For what its worth, we experienced about a 15-20 degree drop in temps as well the past week but its back up in the 90's now.

We have shocked and Algaecide the pool. Water chemical levels had stayed the same. Algaecide foamed up considerably. Then I vacuumed out and scrubbed the remaining liner clean using the vacuum. I have also washed out the filter element (to get by for now) and have ordered a new filter element. On a suggestion from my mother in law we added a considerable amount of Baking Soda to the water. She evidently was a Maintenance person at a large hotel and was in charge of a very large pool. Last test show PH was up.

So the water yesterday morning... was not clear.. and was green but considerably better looking.

Later that night it was swimmable but not really clear but this morning it was blue and looking better.

As a fairly new pool owner, I had smaller Intex pools in the past, what can I do to eliminate this happening again?
Where did I go wrong and what steps can I take to get the pool under control. (Weekly plan?)

Also, I have been told different things from its your filter to your chemical level content of the pool. I have also been considering a sand filter but was trying to get through this year but would like to know thoughts on a sand filter and what size (lbs) is recommended for a pool my size.

Thanks,
Chris

Wow. Sounds like you need to do some reading here on the forum and over on our sister website www.poolsolutions.com so that you can learn to take care of your pool yourself and not rely on other advice.

We never recommend any algaecide other than 60% Polyquat for the very reason that you are seeing in your pool ---- foam!
You actually don't need an algaecide. You just need chlorine and lots of it to clear a green pool.

You cannot effectively fight algae with trichlor tabs. They simply cannot add a large enough dose at one time to do anything. Just use bleach to kill this algae. If you have some current water testing numbers taken with a drops-based kit (no test strips), please post them and then somebody can better advise you.

We think the best kit out there is the Taylor K2006 or 2006C (better buy). You won't be able to find it locally, but can get it through this link:> http://pool9.net/tk/

Baking soda will do nothing to clear algae. It is used to raise alkalinity.

Get us some good numbers (pool store testing is usually not reliable, by the way) and also buy a bunch of jugs of plain, unscented generic 8.25% bleach at Walmart, several boxes of 20 Mule Team Borax (laundry aisle) and a gallon of distilled water.

Repost with numbers and also tell us the ingredients of what all you have added to the pool. (Not just product names.)

Regarding your pump ---- having a powerful pump is not a good thing for a pool. You actually want a smaller pump paired with a larger filter for the best performance. I'll let someone else address that problem in a bit but for now, let's just try and get rid of the algae.

Welcome to the Pool Forum!

(Until you registration is completed, you won't be able to see the rest of the forum while you are logged in. So, copy that link and then paste it into a browser window after you log out.)

Locking this thread as it appears that you have started two threads about the same problem. Please only make one thread so that all questions and replies can be kept together. That makes it easier for us to help and easier for you to find the answers you need. We'll use your other thread that Dave has given you a reply in this morning.