What is your Alk at?
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vetteguy53081
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Mine at 8.8 and balances with calcium at 471
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I keep it around 8.5. i have a full sps tank with alot of flow. I actually wish some of the coral would stay the size they are, and stop growing! 
doubleshot00
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9-9.5 ish so i try ti keep it around there. Thats according to hanna. Red sea says its 8.5 and Salifert says 8. So i just assume it’s above 8
Tuan’s Reef
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Just went thru my 1st box of Salifert Alk test kit. 100 test performed since May 30th. Been trying to increase slowly manually but it didn't work out well. so I got myself some dosers to help 
I run at 8 DKH
I run at 8 DKH
Smoke-Town
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My alk is extremely unstable atm... the megative effects that I assume are related to alk swings that I've noticed are lackluster red colors in corals, and the superman leptoseris and sunset montipora have kinda half died then instantly regrow after adding. A few gonis are always irritated, can't tell if that's alk or clownfish related.
Anyway I like to get my alk in 8.5-9.5 range but after a half week or so it can drop to 7.4 sometimes. Finally ordered more dosers so I can stabilize that. Coral growth has been extremely fast despite this constant swing. And most of my corals don't seem to care at all, including the acros.
Anyway I like to get my alk in 8.5-9.5 range but after a half week or so it can drop to 7.4 sometimes. Finally ordered more dosers so I can stabilize that. Coral growth has been extremely fast despite this constant swing. And most of my corals don't seem to care at all, including the acros.
gbru316
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As with many things in nature, it's a balancing act.
In higher nutrient tanks, you can get away with higher alkalinity without burning your coral. In ULNS tanks, you can't. There seems to be a relationship between available nutrients and calcification rate (and I'm sure water flow and available light are variables in that equation, too).
I'm currently running pretty average on everything: 0.04 Po4, 13 No3, 8.5 dKh. Though. with Trident controlled dosing, it generally meanders in between 8.4 and 8.6 over the course of a few days.
In higher nutrient tanks, you can get away with higher alkalinity without burning your coral. In ULNS tanks, you can't. There seems to be a relationship between available nutrients and calcification rate (and I'm sure water flow and available light are variables in that equation, too).
I'm currently running pretty average on everything: 0.04 Po4, 13 No3, 8.5 dKh. Though. with Trident controlled dosing, it generally meanders in between 8.4 and 8.6 over the course of a few days.
