This is my first post. I'm trying to weigh the "don't post a question that's already been answered" rule against the "don't hijack someone else's thread" rule, so please excuse me if I've come down on the wrong side of that.
No problem. Any time you even think it may be a hijack, start your own thread. Butterfly
My question is similar. We have an indoor pool, and we have always used Bromine tabs in a large in-line feeder, which only needed to be filled every 3-4 weeks. The first few years I did this myself, then life happened and we decided to outsource the maintenance. Now my wife has gotten into a fight with the pool company, so "we've" decided to take it back over ourselves (i.e. she has decided that I will do the maintenance).
However, in the intervening years, the pool company has replaced our old Bromine feeder with a new Biolabs TC-Series TC-25 TriChlor feeder. The feeder has all kinds of warnings about not using Chlorine or Bromine, risk of fire, use only Biolabs chemicals, etc.
I purchased a couple of 50-pound buckets of Bromine from an online store last year, and it *looks* like they have been using those in the TC-25 since they installed it, but I'm not sure. There's definitely no TriChlor tabs in our basement, so unless they've been bringing what they needed every month and not leaving any extra, they've probably been using the Bromine. Based on what I'm reading above, it sounds like it's actually fine to use the TC-25 for Bromine as long as it's *only* ever been used for Bromine. But you could have issues if you mix. Is that correct? Aside from the labels, I can't see much functional difference between our old feeder and this new one.
The fight has been going on for three months, so there's been nothing in the feeder since then. Not surprisingly, the water is now quite cloudy, and when I drop a DPD-1 tab into my crappy little test kit there is absolutely no color change at all to the water, so I believe FC (or is it FB?) is 0.
I've pulled the basket out of the feeder and rinsed it out with the hose. Do I dare just put in some Bromine and let it go? Obviously the right thing to do is call the pool company to see what they've been doing (my wife and I have always been at work when they come so we have no idea), but I'm not even sure we're on speaking terms at this point. If they were using TriChlor, would running water through the feeder for 2 months with no TriChlor tabs be enough to make it "safe" to switch the feeder to Bromine even if they were using TriChlor before?
Sorry I don't have full readings for the pool other than FC. I just ordered my TF-100 kit yesterday, so it should be here Friday, at which point I can post full readings. The pool is ~18,000 gallons, 12'x32' gunnite, with a Sta-rite Series 3 (S7M120) filter, Pentair Whisperflo pump, and Sta-rite SR200NA heater, if that helps. Every single one of those has been installed since we purchased the house 7 years ago - most in the last 4 years.
Thanks in advance for any advice for this newbie!