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  1. 5

    Do you really need to shock your spa every week or so?

    Using 10.3% pool chlorine, I shock weekly and also after heavy usage, by using the breakpoint chlorination method described below, raising to 10ppm FC and continuing to add more chlorine every few hours until the FC starts to holds steady at 10ppm. Shocks are used to get rid of 2 types of...
  2. 5

    Using a Hot Tub as a Pool in Summer

    I use my Bullfrog A7 (2.24m x 2.24m) as a mini-pool during these recent heat waves. If it's hovering around 30C out, I set the spa to 33-34.5. Heat from the pumps will bring it up to 35.5-36 after a couple hours, and 36 is slightly too warm when it's hot out. If it's really hot out (mid to...
  3. 5

    Scum absorbing products

    Before my water change a month ago, I got a Scumbug from a local national retailer due to people's unrinsed (soapy) bathing suits foaming up my water, it was mildly helpful but I wouldn't say very helpful - still had to remove foam by scooping it out with a frisbee and squeezing out the Scumbug...
  4. 5

    Hot Tub Filter Cleaning Questions.....frequency and best method to clean?

    Agree, just use common sense and know what you're getting in to. You don't need Pennzoil Platinum Full Synthetic or Mobil 1 or any other particular brand name, but you do need API SN (or higher) or ILSAC GF5 (or higher), and in the exact SAE oil weight specified by the manufacturer. The...
  5. 5

    Hot Tub Filter Cleaning Questions.....frequency and best method to clean?

    Yes, that is precisely what I would do. Hose off, then soak in a filter degreaser (I would prefer an environmentally-friendly, phosphate-free degreasing agent), then if I needed to remove calcium deposits, use a 1:10 MA:water solution (this 1:10 ratio comes from page 40 of the 2021 Bullfrog...
  6. 5

    Hot tub chemistry numbers

    I think you probably know the answers already since you have several years of reading about spas and hot tubs. I'm only 6 months into this game, and only use chlorine so can't speak about bromine, but I'll sum up what I've figured out so far: There is no one exact, proper number for any of...
  7. 5

    Hot Tub Filter Cleaning Questions.....frequency and best method to clean?

    The reason for using the tools I mentioned above is to use pressurized streams of water on normal household tap pressure to blast out hair, dead skin, bits of pipe glue, grit, etc from the very deep filter pleats. A good hose with a non-aerated high pressure stream can do the job 80-95% of the...
  8. 5

    Hot Tub Filter Cleaning Questions.....frequency and best method to clean?

    I have 2 coreless filters in my Bullfrog A7. The touchscreen and app prompts me to "Rinse filter with hose" every 30 days and "Clean filter in solution" every 60 days. My water is crystal clear and needs nothing except for 150mL chlorine after each soak (every 3 days) and ~40g dry acid every 2-3...
  9. 5

    Paper wasps under cover

    On that track, if you have icaridin or picaridin (DEET alternatives), spraying that where the wasps are nesting should work. Spraying DEET mosquito repellent will work too, but it may dissolve plastics/vinyl/etc in the area, so try the icaridin/picaridin first.
  10. 5

    How to clean empty spa?

    I would use a teaspoon of Ahhsome gel dissolved with hot water in a small bucket, then soak a good microfibre cloth in it and scrub the water line. This is what I did to clean the waterline throughout the purge, and had no problems with any waterline buildup. A good microfibre is the kind where...
  11. 5

    Is there a minimum level of free chlorine required to work correctly?

    https://www.cdc.gov/healthywater/swimming/residential/disinfection-testing.html Free Available Chlorine Germ-Killing Timetable E. coli 0157:H7 (Bacterium) less than 1 minute Hepatitis A (Virus) approximately 16 minutes Giardia (Parasite) approximately 45 minutes Cryptosporidium...
  12. 5

    Paper wasps under cover

    I would try every environmentally-friendly liquid that dries into a film of something that the wasps won't like. Super-concentrated salt water, super-concentrated borax water, high-strength acetic acid, Carolina Reaper or Ghost Pepper oil, any essential oils you can get a hold of, etc. Most spa...
  13. 5

    Ahh-Some questions

    From my experience, Ahhsome works better when warm, and even in 38C spa water, it's slow to dissolve. I would dissolve the gel in a bucket of hot water first. It should work in the spa at well water temp when well dissolved and evenly spread in the water. Ensure you fill the spa to at least the...
  14. 5

    Chlorine gas released from hot tub water?

    I don't think aqueous chlorine (HOCl) converts directly to Cl2 (chlorine gas) under hot tub conditions. Chlorine gas (Cl2) hydrolyzes in water according to the following reaction: Cl2 + H2O <-> HOCl + Cl- + H+ and then HOCl <-> ClO- + H+ You can calculate the amount of chlorine being added to...
  15. 5

    Adding WiFi to a Bullfrog A6 / Gecko in.stream 2

    If you manually activate anything (pump 1 or 2, lights, anything) on the control pad or via the app, the ozonator doesn't run - this is by design to deactivate the ozonator when the system detects "spa in use". I suspect this limitation is for the traditional ozone system - I assume the...
  16. 5

    Adding WiFi to a Bullfrog A6 / Gecko in.stream 2

    I just installed the wifi module the other day. It is simple. 1) Connect the home module to a wired ethernet line and wall socket, run it to a wall as close to the spa as possible 2) Power off spa! 3) Open the spa control board box, find the spare ports on the side, plug in the spa module a...
  17. 5

    UPDATE: Incorrect Wiring? -- New Bullfrog Spa keeps tripping breaker

    Bullfrog control boards come from the factory set to 60A. Spa dealers typically sell a 40-50A GFCI subpanels. If your spa is fully loaded, it could theoretically draw the full 60A (or 80% of, technically), and then your subpanel will trip due to overcurrent. You can enter the Electrical...
  18. 5

    What am I doing wrong?

    I ran the Ahhsome cleaner until the gunk stopped accumulating - I was scooping it out as it accumulated as well as wiping it off the sides. My jets turn off every 20 minutes and I was doing other things that afternoon, so it was on-off for closer to 4 hours before the gunk stopped accumulating...
  19. 5

    New water fill questions

    The 15.7% would definitely be much easier to work with than the usual full strength commercial grade 31.45%, and as such, the PPE requirements are much lower. The 15.7% is not readily available in some or many geographies - for example, in my area, when I last looked, the various stores carried...
  20. 5

    Vacation spa question

    I collected some information about "shocking" and posted it here the other day How to shock a chlorine spa - take a read through I assume your definition of "shock" is "kill everything", and that your concern is about bacteria/viruses/parasites in the water. The product I would use is liquid...
  21. 5

    New water fill questions

    No need to measure CYA directly, just assume you're starting at zero since it's a fresh fill, and use PoolMath to add up the CYA. For me, I needed a total of 65g dichlor to reach 20 CYA. It is also good practice (and specified in the Bullfrog Owner's Manual) to superchlorinate to 10ppm upon a...
  22. 5

    Ozone and Sanitation

    Consider the effects of ozone to be secondary to chlorine. Ozone is an excellent backup to chlorine, but you absolutely still need a chlorine source for residual sanitizing power. Ozone does not provide any sort of residual - think of it like a super-instant-clean with zero lasting power, that...
  23. 5

    New water fill questions

    No downside to muriatic aka hydrochloric acid, aside from much trickier handling/dilution/ventilation. You'll want wrap around goggles, elbow length rubber gloves, and you'll not want to be pouring this in your house - you'll need plenty of ventilation, but also not be pouring into the wind...
  24. 5

    Keeping Free Chlorine stable

    The problem with dichlor and trichlor tabs and powder is that they quickly add to your CYA (cyanuric acid) level. The higher the CYA, the less effective free chlorine is. The general consensus for residential spas is to have your CYA between 20 and 40ppm. You will quickly exceed that 40ppm when...
  25. 5

    New water fill questions

    Adjust your pH first: 8.2 is high for a spa, get it down to 7.2 by adding the specified amount of dry acid per PoolMath using your spa capacity and the other numbers. Any pH reducer (most cases dry acid or muriatic acid) will also drop your TA, which is expected and desired when your TA is 150...
  26. 5

    How to shock a chlorine spa

    https://aquamagazine.com/features/shock-oxidation-superchlorination-hyperchlorination-breakpoint-chlorination.html This article says there are three different methods of chlorine "shock", despite the universal use of the term, and each type of "shock" refers to specific processes and are used...
  27. 5

    Spa Marvel

    Disclosure: I have absolutely no affiliation, no financial interests, no business nor personal relationships with Spa Marvel. I paid a local in-town pool supply store full price for one bottle of Spa Marvel Water Conditioner, for the purposes of trying to eliminate hot tub itch, not for the...
  28. 5

    Ahh-Some filter cleaner

    Hey @Ahhsomeguy, can you give us more details about the chemical composition of the Ahhsome filter cleaner? Some filter manufacturers warn to use a degreaser PRIOR to using an acidic product (acidic product to remove calcium and mineral deposits). My various local stores here in Canada carry...
  29. 5

    How long does it take to heat your spa?

    Q=cp * d * V * (Tf - Ti) joules of heat transferred = isobaric specific heat capacity measured in joules per gram Kelvin difference * density measured in grams per cubic metre * volume in litres * (final temp - initial temp in centigrade) isobaric specific heat capacity of water = 4.18 joules...
  30. 5

    Hot Tub cleaning

    QuickVac QuickVac is the smaller version of the QuickDrain, both work by via manual/mechanical siphon action. Or cut a 4L jug of vinegar and use the flat edges as a scoop.