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In general no product sold as “bleach” will be cheaper for the amount of actual sodium hypochlorite than product sold for pool chlorination, as the pool chlorine is nearly always 10% or 12.5%. Menards, my go to in the Midwest sells 12.5% for $3.99/gallon. Most bleach around here is that or more...

I suspect the cost to manufacture HCl is less than the distribution and shipping costs, as I’ve never seen half strength muriatic acid in the Midwest that was not the same or more expensive than full strength. I buy full strength at Menards for $3.99/gallon. They sell half strength for...

Good find! This is a perfect reminder that my go-to place to buy liquid chlorine had none in stock by the middle of September last year, and my basement stickpile is down to 4 gallons. I need to go replenish before they stop carrying it for the year!

That looks like an Intex pool. I’m not sure about yours but mine came with two black plugs to plug those holes if the tubes weren’t installed. That would allow removal without draining the pool.

The Frog @ease system uses a form of chlorine that shows up as CCs. We’ve had at least one person here who tried the @ease for a while and decided it wasn’t worth it. I believe their water went cloudy eventually which is when they decided to stop using it. I can dig up the thread if you’re...

I’m not sure about direct burial wire in conduit. NM (romex) can be run in conduit, with some exceptions, but the fill calculation must be done with the width of the cable as the diameter of a circular wire. But NM cannot be used in wet areas, and I don’t know what code says about direct burial...

Yeah that label isn't the new style bottle I have, it looks like it was put on the wrong. @OTPirate @Leebo

My tub is about 6' from my house. If you walk out the patio doors, on the left is a staircase leading up to the deck. The tub is immediately in front of the doors, but just past the staircase. My Saltron Mini is plugged into the outlet by the doors, mounted on the outside of the deck staircase...

Yes, the vinyl liner is not conductive, but my Intex pool has 56 metal supports, half vertical, half horizontal. They are all connected by plastic joints, not joined like on a hard-walled permanent pool. According to my electrical inspector, all would have to be connected to the ground bonding...

Permanent pools must be bonded. Essentially all concrete/gunite, metal, equipment, and the ground around the pool must all be connected with a bonding grid of wire. Storable pools such as Intex pools are exempted from this bonding requirement. They have a few other safety requirements for...

Yeah my pumps run about 20 minutes then turn off. I can then restart them immediately.

Indeed I’ve been following the TFPC method since we got our pool last year. The water has looked like this throughout both swim seasons:

I would disagree on that. My comment on the SWCG for my Intex is because if I add one other than an Intex one, I have to bond my pool, not an easy job on a pool not designed to be bonded. But I have a SWCG on my hot tub. I absolutely, 100% love it. It maintains the FC between uses for me. I've...

Just wait for the colored bits to start showing up in the foam!

Okay so you have the old TF kit bottle. The one that comes with the Pro kit (and maybe the regular now?) has extra markings that allow you fill it either half way for the new small view tube, or all the way for the larger tube that allows measuring down to 20 ppm. I’m away from my kit now but...

Mine mounted sideways with the pump sitting in the sun would have 10+ psi indicated changes throughout the day that made it worthless for me. If it works for you that’s great. The purpose of the vent is to correct for these temp based changes. But the vent needs to be on the top of the gauge or...

They are nice. I have the regular type, but I wish I had the low profile type that drops the cover way down.

Do you have a picture showing both bottles?

Again the best thing would be a SWCG, but with my Intex pool that’s a bit difficult (except for the rather undersized Intex SWCG). Yes you have to account for the CYA added. Somewhat regular testing is needed, as CYA reduces if you backwash, splash out, or otherwise drain the pool. It also...

If it’s removing TDS then it must be a DI resin. These remove all ions from the water. This can’t be regenerated with salt. A regular softener resin has sodium stuck to the resin. When water flows through the magnesium and calcium swap places with the sodium, which enters the water. So you’re...

Many here, including myself, who don’t have a SWCG will use tablets in a floater while on vacation. They are not inherently evil in and of themselves, if the relationship between CYA and FC is known which precludes their use as the sole source of FC then they do serve a purpose still from time...

CSI isn’t for metal parts. If you look at the TFP recommended levels, CH of 0-50 is acceptable and 50-550 is ideal for vinyl pools (which would apply to acrylic as well). There is a note that some metals may be affected by CH levels near zero over extended periods of time, but that is why the...

Hot tubs like ours are acrylic. Negative CSI doesn’t matter. Unless you are having issues with excessive foaming you don’t need to add calcium.

Intex pumps and filters are on the small side but the one that came with my 26’ round Intex pool does get the job done. I just have to backwash it more than I would if the filter was a little bigger.

Don’t get worked up. I just asked about the deck but you answered that, sounds fine. Don’t worry about the water. You’ve been a member here a while? Got a pool? Follow TFP guidelines? The spa won’t be difficult. Don’t worry about it. The only open question is the ceiling height in your porch...

Perfect. Just checking. For those not aware, the reason I was checking is that here in Wisconsin decks must be built to support 40 pounds per square foot live loads (minimum) plus any dead loads. Most general purpose decks do not have and are not designed for dead loads. My 450 gallon tub is...

Just checking: Was that deck built specifically to hold a hot tub? Normal decks are not strong enough to safety support a filled hot tub.

There’s no reason you can’t add CYA instead of dichlor. The dichlor then bleach method came about presumably because people already had and used dichlor on their spas, and didn’t have CYA laying around. I do just this. I personally skip the sock. If adding CYA to a heated tub, I just pour it...

It is impossible. Your read is wrong. Clamping over the entire conduit gives a false reading. You need a single wire. Grabbing both the supply and return wires the current cancels out. There’s some error in the reading which is why you’re reading 0.1 but they mostly cancel out which is why you...