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Ya big salt corrosion problem, like every cruise ship is rotting from the ocean salt pool which is 10 x the salinity of a homeowners salt pool. Salt pool corrosion is a myth.

If you get the Waterway Power Defender 165 you will draw 13.6 amps (115Vac) so make sure you have 12 AWG for 20 amp breaker or 14 AWG for 15 amp breaker.

the only difference you will find by running it at night is a smaller energy bill. And no there is no benefit to running it an hour or two during the day.

The very first post for this discussion says that this work must be done by a licensed electrician. This could be dangerous when performed by owner. Unsafe!

You don't need to replace the pump but the motor with a VS motor and controller. Call the inyo guys to get the correct one. Or spend more money and get a VS motor/pump.

ahh. No.

Sun is not a factor in this scenario because this is trying to clear up water from opening. Consumption by oxidation is what i am concerned with on start up. CYA is a long term goal for save Chlorine from sun.

I dont add cya at first because i am just gonna pump it out on vac to waste. When you have a heavy load of "dirt" and other critters from a 8 month close there is a lot of vac to waste and slamming. Ben's original FC/CYA chart has about 12 mg for FC at 0 -10 CYA. That is typical for where i...

Never had a problem in 12 years. I must be real lucky.

Sorry to jump in late on this thread but mine looks worse than this every opening in May. I just fill the pool real full with water and then vac a lot to waste. All the while keeping the hose going to pool. Then when i think i have most of the stuff, worms and whatever else off bottom, then...

Lets ask Pennypat to keep the chlorine high for the next month then the "iron" stain will magically be gone.

It never has been iron. your available cholorine is too low. You have the water reports to prove you dont have much iron. pool/softener salt does not have that much iron. the salt you buy at the hardware store is at least 99.6% NaCl.

Agree.

yes there is underwater glue that you can get from pool supply. it works good. i have used it to patch a hole in my liner. if you put the mat down it will not be removed until you replace liner.

Republic of South Africa?

after you get yourself one of the above mentioned test kits, go to the hardware store and get a bag of water softener salt without the iron out additive. just the plain stuff. Here in the midwest i go to Menards and get the solar naturals salt crystals. $6.22 for 50 lb. bag

If you just want to spend money, get a VSP to save money. I would not replace a good sand filter just because it old. As big as your filter is you could use laterals from my hayward sand filter, mine is old and works well. your ROI will be years ahead with a VSP.

If doing small refills one would not notice. If tracking year to year yes may possibly notice. Also if on city water, sources may change throughout the year. Very hard to track using hardness.

Evaporation testing is a bit tricky when comparing different areas of country. Variables: Are you testing on June 21 the longest daylight time of the year solar IR vs. short daylight hours. Water temp Wind speed on top of water. turbulence from returns Humidity So when testing your pool make...

No your fill water is the same hardness as the water leaking. That is unless you are gonna let a bunch like 25% of your pool water leak out then compare.

240 V feed. You have lots of options. How much do you want to spend upfront. Slower the pump runs the quieter it will be. 1.5" or 2" does not matter. Remember, all you are trying to do is run it just fast enough to have your skimmers work properly and or you SWG work. Personally i run mine slow...

Just curios, why does it need a desperate emptying?

There is research. why don't they with covers, because they are not needed. Covering could reduce the air flow which would be a detriment. Take a tour of your local waste water treatment plant and count how may motors are covered. None.

doesnt make sense to open in April. There is not enough solar hours in Michigan to warm up you pool. You will just waste time and money.

Yes, fill up pool, vac all the crud, then SLAM hard.

Again, it happens every year to me. You will be fine. you have to vacuum anyway.

A week is about right. I run wide open and back flush often. Usually between 5 and 7 days for perfect water.

I am also here in the midwest. don't do anything other than put the cover back on. Your water will be fine when you open in the end of May, it will be like any other year. Whatever you do dont put anything in as you will be wasting your money. I have a mesh cover so it always gets some...

SLAM it hard then vac all the "gook" to waste bypassing the filter.