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Too much direct water flow would cause that. All the other corals in your system seem to be softies or LPS. Digis (SPS) are a little more pickey about water quality.
How long have they been in your tank? Did you change anything lately, Pumps - lighting or salt.
dkh - a measurment of Alkalinity -
I dont agree with what Merv has said, although I'm almost positive your problem has to do with Alkalinity.
Merv, I run my tank at around 6.5 dkh and I know it has dropped below 6.0 a couple of times with no ill effects. BTW - I dose a ton of DIY Bionic.
If...
Candi, I think I'm pretty close to you, Fair Haven, right next to Red Bank. I've got lots of corals, mostly sps, some mushrooms and other things.
Keep an eye on the NJ section of Reef Central also. Lots of traffic there.
Hef
Well, how big is your system? Say you have a 100 gallon system and pull 1 gallon of skimate and replace it with 1 gallon of Fresh RO Water, you have diluted your tank by 1/100th of the original Specific Gravity. In other words, not much.
Of course there could be holes in my math there, but...
A DSB will cause a drain on Alk & Ca. Not sure if it has anything to do with CO2, but I've heard that Bare Bottom Tanks use less Alk & Ca.
I'd say you simply are not adding enough of the additives.
Is there a reason that you want 10-11 DKH? I run my tank at between 6 - 7 DKH. I keep my Ca at...
Not sure why you would want loc line under the sand. You could just run PVC to where it will come up out of the sand then adapt it to fit the loc line.
Cant let you guys have all this fun without me. I might be in, dive or land. I'm going to call a buddy of mine, he just bought a 50 ft boat last month. He loves to dive, and has lots of equipment. He caught that beautiful Angel in my tank when he was diving down in Florida. He also has a trailer...
For Sale or Trade
Lots of - Elkhorn, Digitata, Green Slimer, Orange, Purple & Green Cap.
One Nana Frag, (very nice color & shape)
Maybe a couple of Efflo Frags (been holding these for a while to make sure they are healthy) No color to speak of, but they are healthy.
Trade for SPS only.
Hef
Not bad, can you briefly tell us what you did? I use photoshop, and generally all I do is have the White Balance set for the lighting at the time.
What you did with that pic looks great, and real.
Dan, I have two drills (hole saws) for the 3/4" and 1" Uniseals. I used them when I modified my skimmer. If Rich does not have these, you are welcome to come by my house on your way down and pick them up. They have the built in Pilot drill, very easy to use.
Serious Tank envy going on over here tonight. It's all Steve's fault.
I didnt really think about it when I was there, but now it hit me, everything in your tank looks like it's Supposed to be there. I'm sure having all those extra tanks in the garage really helps.
My tank is always a project...
Steve, I figured your tanks might be a disappointment after seeing the pics for a couple years. They were not, you can tell you have a love for this hobby. I'll be looking for some 10k lights in the next group buy.
Hospitality was great, everything was great.
Looking through your tanks, the...
I will have a few pieces of that Green Slimer I posted back on page 4. All of them are encrusted on Small rubble. $10 - $15 - & $20 sizes. I cannot take any trades of anything, I'm headed into NYC after the meeting and will not be home till Sunday Night. If nobody buys my frags, I guess there...