# Thread: Gallons Calculation & First TF-100 Results

1. ## Gallons Calculation & First TF-100 Results

Recently purchased house (October 2013). It was a foreclosure and pool was dark green. Pool is fiberglass and installed in 1995. I hired someone to bring back water. In the process, we found 3 metal bar stools, a 25" tube TV with the tube shattered and various other items in the bottom of the pool. Water is crystal clear now. There are some rust stains here and there and the first 14" or so of the vertical wall in the deep end is stained brownish. Pool service tried a few different stain treatments without success. Might try working on the stains again in a few months - not a priority right now.

I still have a pool service while I learn from Pool School. I need assistance with gallons calculation. Each website I try gives a different result from 13k to about 18k. My pool is kidney bean shaped.

15' x 32' (Outer dimensions including coping band)
The first 9.5' are 3' deep x ~14' wide
The next 9 feet are 5'4" deep x ~ 14' wide
The final 10.5 feet are 7.5" x ~14' wide
There is a ledge about 3' down in the middle and deep portions of the pool

What would you estimate volume at?

My first attempt at TF-100
FC = 2
CC = 0.5
TC = 2.5
CH = 425
TA = 100
CYA = 40
Ph = 8.0

Above the water line, the fiberglass is smooth, below the water line is rough, mild milkiness if I rub the walls below water line. My cartridge has a white film each time it is rinsed that leave white flakes in my grass.

Thanks for any input!

2. ## Re: Gallons Calculation & First TF-100 Results

Welcome to TFP!!!

I would use about 16k as the volume. As you add chemicals and test ... see if you are hitting the target, if not adjust the volume until you do ... it is not very critical.

If the surface is rough and white I would guess you have calcium scaling as a result of the CH being a little high and likely the pH staying too high. You need to keep the pH in range to stop the scale from forming and if you keep it on the low side (7.0-7.4), with a lot of brushing, it should go away (think months ... not days).

3. ## Re: Gallons Calculation & First TF-100 Results

Thanks Jason! I will test again in a few days to continue to get a feel for the process. Will do away with the pool service in the next 30 days or so. Looking forward to the TFP method!

4. ## Gallons Calculation & First TF-100 Results

Welcome to TFP !

If you haven't already take sometime and do some reading in pool school. 😎

5. ## Re: Gallons Calculation & First TF-100 Results

Originally Posted by pwrstrk
Welcome to TFP !
If you haven't already take sometime and do some reading in pool school. ��
+1 :good Job: The best place to jump in is the ABC's. Take some time there and the rest will be easier.

Welcome, and enjoy the forum!

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•