Questions - Need some input

In recap; I'm putting together a 120 gallon reef with a sump. I currently have about 80 to 100lbs of Crushed Coral/Argonite from when this tank was a Cichlid/African Lake tank. My LFS owner suggested I go with maybe a 1/2 inch of the Argonite/crushed coral and then add 80 to 120 lbs of Live sand on top of the substrate. Is that necessary? Can the reef survive without Live sand??? whats everyones thoughts??? can I just re-use the CC/Argonite??? I've boiled all the Crushed Coral to clean it. ...

Hey guys. I've got a weird question! Two of my three chromies are kissing alot. It's really the only way I can describe what they are doing. It's not like a peck but more like they are in highschool sucking face. It's really weird. It's almost to the point where I have to sit my son down and have the birds and the bees talk. HELP!!!!!!!

Hi everyone, just for a recap. I have a 240 gallon tank 96 x 24 x24 with an 88 gallon sump.
I am having trouble keeping it up to the correct temp at night. Sometimes it drope to 76 or 75 degrees. I have probably went through ten heaters this last year they work ok for a few months then just quit. I would appreciate any thoughts or recommendations for heaters for large tanks.
thanks,
-Steven

I currently have a 35 gal saltwater and am looking to go to a 125-150 gallon. How long should the tank run before adding corals from the old tank.

Well, After breaking down my 120 gallon and cleaning it, painting it and other general maintenance. It's back on the stand in the living room, I awoke to find a cat "fish" already in the tank, See photo below . ( so, another wash and wipe...) Yesterday I acquired a 29 gallon long for use as my sump, ( maybe too big, but am running with it...) It was pretty dirty, 3 inches of Wally World Purple Gravel, deap plastic Plants with Blown Insulation into everything. and See before and after ...

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