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The rate of which pH increases in my pool is like clockwork, and I could probably go without testing it at all, just adding a cup of MA every 3 days. I'm still a little more diligent about testing FC because I do see larger swings every once in a while. With a smaller pool like mine, I think...

Chlorine has a shelf life. From the chart at the bottom of this page, you can see the half life of 10% liquid chlorine at various temperatures. However, given that you're going through chlorine so fast, you'll run out long before you've come close to the half-life of 10%. I think a better...

It was technically correct :goodjob: http://en.wikipedia.org/wiki/Trichloroethylene

I just wanted to chime in and echo what others are saying. I too noticed I needed to adjust pH with muriatic acid much more frequently after adding borates. My initial TA was 120 when I first added boric acid, which was as low as I could get it through aeration. I found that I needed to adjust...

Leslie's sales tactics 101: Fear, uncertainty, and doubt.

The concentration of chlorine per gram is totally useless, unless you're worried about how much energy you need to put into transporting the stuff. What's important to most of us is the actual cost of using the product. Check out chem geek's post, Cost Comparison of Chlorine Sources.

Okay, let's end the speculation and go to the source. So yes, it's just trichlor. The 1% claim is bupkis. As with all trichlor, it will add 0.6 PPM CYA for each 1 PPM FC (see chem geek's post for more detail). And to answer your question, check http://www.poolcalculator.com/ In a 25,000...

I didn't realize lights could be serviced like this without draining. Now I'm curious to see what horrors await behind mine.

Thanks, I've been reading up on CSI and I've learned something new. Follow-up question -- As CH continues to climb, and pH / TA need to be taken lower, does this pose any risk to bathers? At what point should you just "give in" and drain?

Yikes, I think I'm going to have to calibrate my reagents now :suspect:

jblizzle, I was wondering if you could elaborate a little more on this? Any guidelines you can refer me to?

I think I found my go-to source ... local independent pool store, a real hole in the wall. Box of 4 gallons HASA 12.5% liquid chlorine (disposable), $12.99. Comes out to $0.20 / oz NaClO. Not the best I've seen in this thread, but the best non-sale price I've found in California!

I ordered my boric acid from Duda Diesel. It was recommended elsewhere to make sure to order the granular version, as opposed to the powdered version. For 25 lbs, the price was just slightly more than the equivalent amount of 20 Team Mule Borax, and way cheaper if I added the amount of muriatic...

Surprised nobody has mentioned this, but ... Make sure you have rights to that water before putting it in your pool. This could get you into trouble fast.

Shock every 1 to 2 weeks huh? I haven't shocked a single time since discovering TFP, and my CC's have never been above 0.5 PPM. Never been cloudy. Never had algae. Too bad, because up until that point, he explanation of chlorine / chloramines was relatively accurate.

Re: New pump, now skimmer flap gets sucked down, doesn't flo First, it's called a weir. Second, I think the behavior you are describing is normal. When the pump is off, the weir should float, preventing debris from entering the pool. When the pump is on, the weir shouldn't flap unless the...

It's any process that results in air being mixed with your pool's water. This can be done by a number of ways, such as using a waterfall feature, turning on your spa's air pump (if you have one) or altering the flow of water from your returns to break the surface of the water. For maximum...

Honestly, I don't know what "normal" flow is. If I had to guess, I'd say my flow is lower than average. I've seen videos on youtube of people's pumps running (where they are discussing their problems with air in the pump basket, no less). In these videos I see bubbles shooting out of the return...

10 PSI.

I've searched and found countless threads on this topic. The general consensus is air in the pump basket is caused by a leak somewhere on the suction side between the pool and the pump, or by a leak in the lid gasket. However, I'm not so sure that's the case here. So first a little background...

I want to play around with this some more, and will post my results. I'm out of phenol red!

For what it's worth, I just took a reading from my pool. Filling the block up correctly to the fill line, and using 5 drops R-0004, I was clearly at 7.5. I cleaned, and refilled the block, up to about where it looks like in the photo above (the top of the 8.2 box), and again used 5 drops R-0004...

It absolutely makes a difference. You should be filling your block up to the fill line, otherwise your results may not be accurate. See Extended Test Kit Directions. The phenol red included with your test kit is formulated to produce a result for the quantity of water up to the fill line. The...

azazel, I don't mean to sound rude, but you need to re-read the advice given to you by others above. Shocking is not an singular event, or a product you buy; it's a process. You should carefully read The Shock Process. Unless you are performing the shock process with a quality test kit, you are...

:goodjob:

I have the Taylor K-2006 combo kit, which may be slightly different from the TF-100 when testing pH. When I test pH, I do it indoors. I have bright-white LED lighting, and I hold the sample up with a white paper towel behind it, which usually makes it pretty clear what the pH level is closest...

Now TFP is starting to seem more like a place of mystery :stirpot:

No Yoda.

Your image shows up fine in this thread. :goodjob: I've confirmed that your image in that other thread doesn't show up on at least 4 different networks, as well as different browsers.

Richard, I've seen you link this a few times in various posts. I'm not sure if you realize it, but it doesn't show up for us non-privileged users: And when I attempt to go directly to the URL, I see I'm going to take a guess and say you were trying to do something like this...