Alk at 15/16
- Thread starter JMM744
- Start date
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You can bring the alk down quickly and easily with *very* small amounts of muriatic acid (you didn't say what the volume of your system is), but you must be able to monitor tank pH closely and accurately while you do this, and don't let the pH drop too low. Stay above pH 7.7.
OP
OP
JMM744
Valuable Member
Thank you Jim. Good to know that. My next question would be will dropping the alk quickly harm my sps corals ? Am thinking about the problems encountered by others due to alk swings.
Well, that is a matter subject to debate, and a very good question. I'm assuming from your thread title and original question that you wanted advice about how to return to the pre-event dKH level. I suggested one way to do that. That's all.
OP
OP
JMM744
Valuable Member
Got my alk down to 10. I tried the acid, 4 drops in a 70 system with sump. Got it down to 13. After that the ph dropped. I ended up changing out 30 gal. with fresh mix and then I pumped about 40 gal. out and into my 400 gal. system. It’s fish only and the alk was at 5 in it. Let the system run about 15 min. and then refilled the 70. Going to monitor and let it drop on its own for now. Watching my sps for signs of stn.
SeaDweller
2500 Club Member
Good luck. I hope that huge drop doesn’t do anything to your coral. Rootin for you.
laverda
2500 Club Member
I would expect you corals to suffer more from the high alk than the decrease. I have used muritac acid in the past myself. Another way to decrease it is to lower your salinity a little. I read some where it is the prefered way to do it quickly. I have not tried it myself.
SeaDweller
2500 Club Member
I think the sudden drop may be a concerns right? Anyway, by lowering salinity you're talking about using straight up RODI to replace what you take out, in essence diluting the tank?
