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Old 03-09-2011, 11:41 PM   #1
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Ca and mg suppliments

Should i be supplimenting my ca and mg levels for favia/frogspawn/xenia/zoas and coraline growth? And if so what do you use?
Dkh-8
Ca-380
Mg1200
Salinity 24
Ph 8.2
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Old 03-11-2011, 08:50 AM   #2
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the cheapest and just as good as anything else are BRS (bulk reef supply). they have just what you need.
you don't need calcium for xenia and zoas, but everything else uses calcium and alk.
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Old 03-11-2011, 03:05 PM   #3
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So x u think i need to dose mg also or just ca with a alk buffer? Thank karl
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Old 03-12-2011, 07:04 AM   #4
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if you are using or have low mag, you should raise it/add it, but i think a decent reef grade salt mix should take care of it. even when my system was using calcium and alk daily, i didn't have to add much mag. only when i have a bryopsis issue did i raise my mag up to 1700 for a time.
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Old 03-12-2011, 04:48 PM   #5
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So going with the kalk should raise my ph,alk and calcium while lowering my co2 levels is that right what i was reading? And i wont worry bout my mg then.
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Old 03-12-2011, 10:27 PM   #6
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not that i know of. kalkwasser keeps levels stable more than raising them. to raise levels, you will need to use a 2 (or three) part additive.

test for everything. every system is different and i've heard of many situations where the same dosing regimen yielded completely different results.
just a FYI-
i have kept tanks full of corals for years without any dosing....just regular water changes. if you are seeing a drastic imbalance and are definitely in need of supplemental ca, alk, and mag, i would suggest setting up dosing pumps and containers. it's pretty easy to do and you can put them on timers so that you can't over dose.
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Old 03-12-2011, 10:55 PM   #7
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More than anything im getting big ph swings 7.8 for 3-4 days then stabalizes at 8.2 for a couple days then drops again back to 7.8. I always know my ph is getting low when my blue legged hermit becomes dormant all day if ph is 8.2 hes moving throughout the day. Thought if maybe i get alk and ca levels up my ph would stabilize. Its weird i test my pwc water and its perfect 8.2 then add 2 gal to tank and still get fluctuations doing weekly 20% pwcs with still dramatic swings any idea what i should do with ca 380 and alk 8 i can get a dosing pump u think it will help .?
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Old 03-12-2011, 11:54 PM   #8
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both of those could be higher. what is the mag BTW?
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Old 03-13-2011, 09:17 AM   #9
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Okay did all tests again
Ph is 7.7
Alk. 7
Ca is 380
Mg is 1080 now
Nitrate 2
Nitrite 0
Ammonia 0
Temp 76
Salinity 25

So my ph is even lower now ( first thing in morning) my little crab hasnt moved since last night
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Old 03-14-2011, 09:44 PM   #10
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You think i should change salts im using bio sea marine mix what would you reccomend i switch too?
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