Well this is just crazy baffling:eek1: Here's the past several days results:
10/25 .205> 40g WC > .1226
10/26 .1287
10/27 .0551
10/28 .0889
10/29 & 10/30 didn't test
10/31 .1165
11/1 .147
11/2 .181
I don't know what's going on?!:hmm6: I have ran the doser at several different intervals where it should have dropped the level within 24 hours and it didn't. So, today I ran it for a few hours at 15/3:30 like yours, Insomniac. I have it set at 15/5:30 tonight and will keep it that way...at least until I test in the morning. 15/8:00 "was" my maintenance dose. I know I'll get it to .04-.05 but this is so :crazy1::headwalls:
I've followed this thread daily since it was started and I've refrained from participating as it seems I have offended people here if my train of thought runs against the concept of the LaCl reactor or the way it's being used. Please don't take offense to my interjection here.
I can't help but wonder if the precipitant is making past your filter floss and or your filter socks and breaking back down into PO4 in your tank. If that is the case, you are kind of chasing ghosts with the reactor. You really need to export that precipitant so it doesn't break down and release the PO4 back into the water column.
From everything I've read, changing filter floss or socks regularly is not something you guys are doing. If it were me, I'd be changing that stuff every week or more. I'd be watching the socks daily and at the slightest sign of them backing up, I would swap them. On the other hand, at the rate you guys dose, the percipitant build up would be slow enough that it would break down long before your socks would back up. As such, my guess is that a good percentage of what precipitates simply breaks down and releases some of the PO4 back into your system.
When I dose LaCl, depending on my PO4 readings, I can clog a 10 micron sock in a matter of 60 minutes as it backs up and will overflow making it very obvious that it needs to be changed. With filter floss, there comes a point where it cannot hold anymore precipitant and when it hits that point, one of two things will happen. It will either backup to the point where nothing will pass through it or it will back up and the precipitant and excess LaCl will pass around it. If that occurs, your PO4 levels will rise as the precipitant breaks down and releases the PO4 back into the water and it will drop as more LaCl is introduced creating a vicious cycle.
I feed heavily every day and don't have those kinds of PO4 fluctuations ever. My Then again, I don't test that often nor do I dose the LaCl daily. I test my PO4 levels when I start to see algae that I don't normally see as well as before and after LaCl treatment. I will also test for a couple subsequent days after the LaCl treatment during which time I don't really see any fluctuations in my PO4 levels. I test using a Hanna ULR Phosphorus checker.
Another comment here.
Terri,
You mentioned your SPS looking weird or bleached. With the levels your PO4 was at and for such a short amount of time, I'd be really surprised that PO4 levels were the root cause of your issue with regards to what you saw with the SPS. It could be precipitant causing it or something else completely unrelated but I don't think it would be from a day or two, let alone a week of slightly elevate PO4 levels. I've seen SPS tanks with much much higher PO4 levels and the corals had no issues at all.
So again, I hope you don't take offense to my comments. I've been doing this long enough to know a thing or two and as such, I am only trying to help.
By they way, I hope you are feeling better!