Bullfrogs EOS Ozone System, like
@phonedave said, is a unique ozone system, in that it injects ozone into a mixing chamber, then that Ozone infused water, to my (limited) understanding, is sent into the hot tub. The EOS system does not pump O3 directly into the tub like what is normally referred to here and everywhere as "Ozone". Bull frog offers its proprietary canister mixed Ozone system called EOS. They SAY is produces and imparts into the water far more ozone when it is running than the normal simple 'ozone generator'. Bullfrog sells that option too, it's called Wellspring.
The misnomer when referring to a circulation pump, is that some manufacturers use a VERY low powered circulation pump that runs 24/7, so many here just wrongly assume when they hear circ. Pump, that is what is being referred to, since that type is are so common. I was in your exact same boat when shopping for my A6L Bullfrog. I asked a lot of questions about if I needed a Circulation Pump in my Bullfrog. Even though I would describe that when Bullfrog says Circulation pump, they mean a full sized pump, not quite as strong as a jet pump maybe, but a fully programmable (to schedule) EXACTLY like a Jet pump. It is NOT a 24/7 low volume pump. But that did not get understood. People heard circ. pump and filled in their assumptions.
I ended up exactly like you, w/o a Bullfrog programmable circ. pump, but with the Bullfrog Proprietary EOS 'mixing chamber' Ozone system. It runs when the twice per day scheduled filtration happens, and I think when heat is called for and pump #1 runs (my default on my 310 gal A6L is 1.5 hours. 2x per day). I was quoted an amazing price on a two-month-old dry floor model 2023 A6L that came w/ EOS & w/o the Bullfrog programmable circ. pump. Like phonedave, I thought it would be good to have that Bullfrog Circ pump. but not if it meant spending $2k more to ORDER a new A6L to get the Bullfrog programmable circ. pump.
As I was down to the wire needing to commit to that floor model deal tub, @CanadianSpaTech pointed me to a thread where @JoyfullNoise said that Bullfrog's mixing chamber version of an ozone system was the good way to use ozone in a more efficient manner. That coupled with the fact that Bullfrog does not put their programmable circ. pump in any (A Series at least) Bullfrog tubs UNLESS YOU ORDER IT THAT WAY! That gave enough weight to the salesman saying "you do not need it". So I pulled the trigger on the great deal on my A6L Select w/ EOS and have not regretted it.
Here is my thread in another forum (before finding this one), Where I asked tons of questions about Bullfrog's EOS Ozone and Bullfrog's programmable Circ. pump.
Order new tub With Circulation pump-or- Without? Why or Why Not?
See @JoyfullNoise 's post #14 on this thread below that made me feel good that my selected Bullfrog floor model 'deal' had the Bullfrog proprietary EOS Ozone System.
@h20proof ,
Also, the EOS system has a
carbon filter that the absorbs what off gasses from the mixing chamber. I had the panel off on the left side of the tub, where the EOS system is mounted. I noticed the carbon filter said to replace in 2 years.
Bullfrog's price for that filter is around $95 IIRC.
LOL QUITE a margin on THAT product! ;o) I looked into it a bit, and I am pretty sure it is simply a regular carbon filter like you use for water filtration. Those can be bought for between $10-20. I am pretty sure carbon is all that reacts with the off gasses, period. I figure when it comes time to get a new one, I can just cut my old one open and 1) confirm it is only carbon inside, and 2) what form of carbon (powdered, granules, block, or what ever).