I am glad I found this. I used to use two timers (one flipped the direction relay) like the ones in the beginning of the thread to operate the automatic door on the chicken coop I had when I still lived on the farm in Iowa. Worked great. But as far as the pump goes, even if you replaced it annually you would take ten years to match the price of a Stenner pump, which itself probably would not last those ten years.
But to dose on a vacation, honestly as a portable system, I don't know why everyone isn't doing this. Store it in a garage or shed when not in use.
5 days of testing complete. I set up my timer to dose 1/2 gallon daily, that would keep me at the high end of my chlorine requirement. I added 3 gallons to my 7 gallon tank and started the test. The system has applied chlorine for 5 days, I have 12 cups remaining. Gotta say I'm pretty happy with that ! I'm using a Woods 50015 timer, adjustable to the minute. I dug a hole under my potting bench to hold the tank, it's in the shade all day so I'm doing the best possible to keep the chlorine cool. This is my "going camping for 14 days" solution. A temporary fix, I see something in the future for a full time setup.
I bought a cheap peristaltic pump instead for mine. And a 12v wall wart. Less than the fish tank pump. But for 20 bucks I think I will also have a weekender when I get my pool done, whenever that will be.
If I hate the cheap pump I can buy a better one. Fun project.
I was thinking of a peristalic pump but decided on the "proven " pump used by original poster. I thought I had a irrigation timer in the shed but could not locate it, had I found it I probably would have got a peristalic and driven it thru the timer, that would have been a cleaner way of accomplishing the task.
So, Fred--- which P pump did you purchase and have you tested it in any way ?
Just the cheap $10 one from Amazon. I have run a little water through it and it does work. The power adapter was also $10. If I can get away with it I will use PVC tube of the same size because I am reading mixed messages about silicone tubing and Bleach.
I still am probably two months away from completion of the pool, so I am just playing with this at the present time. What is nice about the peristaltic pump is no check valve is required to stop a siphon. If the pump craps out the ones in the $25 range seem a lot more substantial. I would have done the diaphragm pump but the cheapest I could find it for was $35.
Yeah but then it would be a $35 project, eh? I am aware of Tygon and it might be a good idea to use something like it anyway.
My father actually built a gyrocopter from scratch (experimental) in the late 1960's. I have medical issues that made it difficult for me to become a private pilot but I always have regretted not becoming a private pilot anyway.
I returned from 14 days camping and found the outlet line had slipped off the pump !!! The tube was somewhat swollen and kind of hard. I guess the chlorine and tube had an issue. My storage tank was dry and it was clear the chlorine was being pumped onto the ground. Anyway, I need to find compatible tube material.And use some sort of mechanical way to keep the tube in place. On the bright side , upon returning the pool was clear, yet the FC was .5, so the problem only festered for a day or 2. I had a small puff of algae around the bottom drain when brushed. I added CL to 7 and things are in check. Pool looks great but I think I will do a SLAM as soon as the ambient temp lowers below 100 F.