baking soda does but i've heard it can mess up your PH or somethign like that. I had alk
at 5 too and read ALOT about it. I decided that in order to raise my alk
i should use a reef program designed to rais alk
but not to mess up your calcium and mag. All 3 are related and if you just start boosting alk
it can mess up your levels of the other 2. I started with b-ionic 2 part cal/alk
. It didn't give me the results I wanted but I've heard others swear by it. I then purchased the RedSea reef foundation 3 pack. It's calcium/Alk
buffer and magnesium. I instantly saw my levels rise and using the 2 part I'm at 420 for calcium, 8-9 for alk
and 1350 for magnesium. It just took figuring out the dosage for each to maintain proper levels but now I dose every second day the same amount and my level stay the same. My sps
are growing like crazy so I know it's taking the stuff out of the water.
I'm sure other companies make good products too but out of the 3 I've tried (I tried sea chem too) the Red Sea seems to be working the best.
Lots swear by only doing water changes and I do about 20% a week but my sps
take so much out of the water I'd have to do daily water changes to keep up with the demand it seems. Maybe I should cut my lights back and slow them down but I can't, I like watchign them grow too much...lol