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  1. M

    Dolphin Probably Dead - What Next?

    I have a 6 year old Dolphin Discovery that is most likely dead. I'm looking for recommendations for a new cleaner. Here's the situation: - I'm not set up for a pressure-side cleaner and don't want to go that route. - The pool is vinyl-lined and I use a SWG. It's a 20x40 rectangle with clipped...
  2. M

    Dolphin Vacuum Starts Then Stops

    I have a Doheny Dolphin Discovery; I believe it's equivalent to the Maytronics S200. This will be its 6th summer. It worked fine last summer and was stored in my garage over the winter. I built my own power supply for it that has worked flawlessly for a few years and is outputting the required...
  3. M

    Doheny/Maytronics Dolphin Cable Swivel

    Hi. I have a Doheny Dolphin (circa 2017) that does not have a swivel cable. I'm getting sick of having toe t constantly untangle it. I'd like to upgrado a swivel cable, but all I've been able to find online are entire cable assemblies for ~$200. All I need is the swivel. I have a feeling this...
  4. M

    Returns are Popping with Pump On Low

    I have two returns in my pool. I just installed Infusion venturi jets on both. When running the pump on low (1500 RPM, 20 gpm, 3-4 PSI) I noticed that both returns make an intermittent popping or "burping" sound, and both produce a small amount of bubbles. Clearly, air is coming from somewhere...
  5. M

    Meyco Cover - Standing Water OK?

    We have a Meyco pool cover. We got a lot of rain this winter, so the water level in our (closed) pool is quite high right now. We're not planning to open it until ~Memorial Day. About 10 days ago, we had heavy rain. As is normal for any trampoline-style cover, the rainwater pooled in the middle...
  6. M

    Is CYA really needed?

    Just installed a SWG this year. Have been running for about three weeks and the water has looked amazingly clear the entire time, with no signs of algae forming on the walls or anything. So far, I'm VERY pleased. Per this site and the SWG instructions, I started adding granular CYA to the pool...
  7. M

    Salt Water Test Failure?

    Was testing my water for salt content today using the Taylor K-1766 kit. Prior to today, I've never had a problem with this test. FYI, I'm using the Taylor stirrer. Filled the cylinder with 25ml of water, added the drop of yellow and started adding the other drops. As soon as I added the first...
  8. M

    Salt not mixing...?

    Recently installed a Crystal Pure PL7703 SWG. My pool's volume is about 27K gallons at the current water level based on my calculations, but I err on the high side for Pool Math purposes because I'm not 100% confident in my math. So, according to Pool Math, to take 30K gallons of water from 0...
  9. M

    Added 900 pounds of salt, SWG still showing 0

    Last week, I installed a Crystal Pure SWG (model #PL7703) for my 30K gallon pool. Finally got around to adding the salt today (was sanitizing with bleach) and am starting to dissolve the CYA. I added 900 pounds of salt and swept it until completely dissolved. 12 hours later, the SWG's instant...
  10. M

    Running SWG 24x7?

    First season with a SWG. I'm planning to run it 24x7 and am wondering if that's a terrible idea. Here's the background: I have a variable speed pump that displays watts of electricity being used. I also have a FlowVis flowmeter. Every season, I check the flow in 100 RPM increments and determine...
  11. M

    Air leak...any ideas?

    Just opened our pool for the summer. Water is already looking great, and I successfully installed a SWG, but I'm struggling with an apparent air leak. Here's what's happening: - Turn the pump on. System runs at ~12 PSI and ~60 GPM. - Over the course of two hours, pressure climbs to ~20 PSI...
  12. M

    Ugh...forgot the union nut...looking for 1.5" union

    Installed a Crystal Pure SWG from INYO today. Everything was going smoothly until I glued one of the unions for the salt cell without the nut. My pool is plumbed with 1.5" pipe. The kit came with both 2" and 1.5" unions, but it looks like only 2" unions are available separately. Anyone have a...
  13. M

    SWG Powered w/ Pump Off

    Planning to convert my pool to salt water this season. I'm in NJ, so I've got a few months to go before I open the pool. Doing my research now and am leaning towards the Hayward AQR15. Reviewing the manual, it clearly states that the system must only be powered when the pump is on. The manual...
  14. M

    Pour New Concrete Over Old?

    With the pool closed for the season and other outdoor projects winding down as we settle into winter (we're in NJ), I'm starting to think about early spring projects and budgeting. As described in this thread - Filter Pressure Too High...? - our pool has a partially crushed return line that...
  15. M

    Filter Pressure Too High...?

    After backwashing, my pool's filter (Hayward S244T sand filter) is running at 28 PSI according to the gauge. Additionally, at max speed, the pump is only moving ~32 GPM (according to my flowmeter), which translates to about 73' of dynamic head according to the pump performance charts. The pool...
  16. M

    Bleach Concentration - Label vs. Real Life

    Opening the pool this weekend and need a lot of bleach. Target is my usual source, but they were out, so I called the pool store. Pool store lady said they have 27% bleach and the price was good (too good, as it turns out...). Turns out the bottles are labeled 12.5%, and her excuse for telling...
  17. M

    Cleaning Cover before Removal

    I have a Meyco safety cover on my pool. When I open the pool, I want to clean the cover before putting it away for the summer. I'm wondering if there is a product this forum can recommend that will allow me to clean the cover while it's on the pool, using a long-handled scrub brush, where the...
  18. M

    Calculating Pool Volume Based on Chemistry

    Weird question... Our pool was inspected last August when we bought our house. The inspector told me the pool holds 29K gallons, and I've based my chemistry on that number. However... I was having an algae problem. Had been SLAMing, ran out of bleach, missed a day or two, and the problem got...
  19. M

    Digital pH Meters Impacted by High FC?

    Are digital pH meters impacted by high FC like the drops are? Since they are relying on ion exchange instead of a chemical reaction like the drops, I tend to think they are not impacted. Thanks.
  20. M

    Cloudy Water - Can't Figure It Out

    The water in my pool is cloudy. It's not bad, as I can still see the bottom of the deep end (8'), but it's noticeably cloudy. The water is not green or anything like that, though there are a few spots of algae on the pool walls that have no grown (or gone away) during the past few days of...
  21. M

    Water Balanced But Not Looking Great

    Relatively new pool owner here, using the BBB method for a 29K gallon vinyl pool. The pool was looking great prior to the holiday weekend. The water was clear and well balanced, I had added some DE to our sand filter, vacuumed it several times (with our Doheny Discovery), etc. Over the holiday...
  22. M

    How To Get Sparkling Water?

    Relatively new pool owner. I have a TF-100 test kit and am using the BBB pool maintenance method, with great results so far. So far this season, my water has held relatively steady at pH of 7.2 - 7.5 (according to the K-1000 tester that comes with the TF-100), and CYA of 40-50. I have a vinyl...
  23. M

    Where does the chlorine go?

    Somewhat new to pool water chemistry. This site is incredibly helpful. I bought the test kit and have had good results so far with the BBB maintenance program. I have a quick question that I haven't been able to find the answer to. I understand the concept of FC + CC = TC. I also understand...
  24. M

    Skimmer vs. Sidewall Suction

    I have a 29K gallon, vinyl-lined pool. Just re-plumbed the equipment pad, and installed a variable speed pump and three-way valve that allows me to configure how much suction I want to pull from the skimmer vs. the sidewall port. Our pool is very simple. It has two returns on one side (one by...
  25. M

    New Pump - What Does This Mean?

    Just finished redoing my equipment pad plumbing and installing a Pentair Superflo VS pump. Something weird is happening... When I turn the pump on, it ramps up to full speed. The flow meter says 48 GPM and pressure gauge says 21 PSI (clean; new sand). There is a small bubble on top of the...
  26. M

    Need Help - Re-Plumbing My Equipment Pad

    First-time pool owner. Purchased the house last August. Pool equipment pad was a total disaster. All different kinds of piping, leaks, ugly, timer didn't work, pump and filter sitting on the ground, etc. Fortunately, the filter (Hayward sand) is fine. I'm having having a new concrete pad poured...
  27. M

    Thoughts on Child Fences

    We have a very large backyard that is fenced in with a pool fence that meets our local and insurance requirements. The pool is fairly close to the house, and has a separate fence made up of picket sections and deck railing where the wood deck meets the pool deck. It doesn't meet the requirements...
  28. M

    110V/220V and Pump Question

    Bought a new house last August that has a pool. This is our first time owning a pool. Pool is in decent shape, and all the equipment works, but the plumbing is a functional and cosmetic mess, and the pump timer is broken. I'm pretty handy, so decided to tackle fixing everything myself. While...
  29. M

    Differences Between Pool Cleaners

    Hi. New (as of last summer) pool owner here. Pool is vinyl-lined, 20x40, Grecian shape, 29,000 gallons. We're in NJ. Pool faces south, so it gets lots of light, but we're in a very open yard, so we don't get too many leaves or wind-blown debris. I posted on this forum a while ago about making...
  30. M

    Question about Plumbing for Polaris Booster Pump

    Hi. New forum member and new pool owner here. Purchased a house with an 18-year-old inground pool. The inspector said the pool, vinyl liner, coping, deck, etc., are in great shape. The equipment is also in pretty good shape. However, the equipment pad and plumbing are a mess. Lots of old...