Recent content by sbe

Sorry I forgot to ask. We have no chlorine smell and the combined chlorine always read essentially zero. What do you mean by harsh?

I live in Portland, OR where we'll get a 90 degree hot day like today, then the temperature plummets to 60 for a few days or a week then maybe it gets hot again, or not. That means pool use is sporadic and because I've got an automatic cover the pool its only open the few hours its when...

I've been testing at home and at the same store for over ten years. The tests have always pretty much matched but today their test indicated Cyanuric Acid at 38 ppm and I run my pool without any CY, never have. I know that's strange but it works for me. What I'm wondering is how a supposedly...

First off thank you both for taking the time to answer my questions. I really appreciate your walking me through your logic. I've got a couple of more questions if you will indulge me. Jason can you tell me how you arrived at a figure of a half hour or more for a localized area to recover...

In the example I quoted that isn't the case, however I understand your point. But I think you are missing mine so lets assume one of the various methods of injecting Chlorine so there is a small steady flow. The FC levels are still going to vary significantly because I haven't allowed for a...

Thanks for such a detailed post, including the kill times. Your conclusion regarding the adequacy of the recommended FC levels with the possible exception of Crypto is consistent with what I was coming up with and is at the heart of what I'm stewing over. Is what's driving the use of CYA...

Got it. I've read all the papers referenced but haven't completely digested every nuance yet, particularly with regard to the stated concern regarding ORP but you alluded to what is the heart of my question. At a pH of 7.4 half the FC will be available for disinfection at the target level of...

I've been reading all the discussions regarding CYA and it got me thinking about how much FC is really required. I'm not talking about what one measures with a test kit but actual free chlorine is available for disinfection. Unfortunately I hadn't been able to locate a chart that plotted ORP...

Anybody from the Oregon found a good price? I'm dying up here.

Would you happen to know roughly what happens to half life for temperatures below 75F? I assume it increases but does the rate of increase flatten out? Also Table 1 only gives the half life so without knowing the shape of the curve its not possible to estimate what strength the solution would...

I understand Table 1 but do you have any idea what the 4 charts that you click through mean?

Portland, OR Case of 4 gallons $27 15 gallon carboy $47

As a followup to my earlier post I was thinking it might be useful to have a list by city of the best way people have found to by Chlorine. If you agree please post just your city name followed by a list of container types and/or sizes (case, 2.5 gallons, 5 gallons, 15 gallons, etc) and price...

I'm really surprised they let you use your own container. Up here first time they give you the carboy and its covered with labels and warnings specific to whatever is inside and when you bring it back they trade it for another full one. It could be exciting if there was some residue in left...

Nice. Just so I understand correctly if you fill 8 of the 2.5 gallon jugs at a time the cost is $4.10 each? Can you tell me anything about what these jugs look like? They sell the same size here but they're not refillable. I'd like to know what they look like so I can ask to see if we can...