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Old 02-19-2005, 05:02 PM   #1
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How much live rock?

I've reached the point where I'm ready to order live rock for my 75gal. tank. My question is -- how much? My LFS guy sez 1 lb. per gallon. I've been eyeing Tampa Bay Saltwater's "package", but their formula calls for 2 lb. per gallon. That seems like a bit much to me (unless their rock is very dense). Anyone have experience with their formula? I don't want the tank clogged with rock (the fishies will need swimming room) but I don't want to underestimate too much either.

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Old 02-19-2005, 05:59 PM   #2
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1 lb / gallon would be anough but not totally full. 1.5/gallon is more of a reef setup, but starting to look filled. The density will change this a little too though so keep that in mind. If cost is an issue, you could always add cheaper base rock and just add 0.5 lb / gallon to that and let it seed the tank.

hope that helps. Have a look in the gallery of peoples 75 gallon tanks. Many of them say how much live rock they have so you can judge what you need for the look you are after...


Equipment: 33G SW Reef tank (pic), 192W Coralife PC lighting, PHs for H2O circulation, Red Sea Berlin Classic Skimmer
Aquascaping: 3" DSB, 50lb live rock (~35 lbs home made Cement Base Rock)
Clean Up Crew: Blue Leg hermits, Cerith snails, Astrea Snails, Stomatella snails, Brittlestar, banded brittles.
Critters: Hawaiian feather duster, Coral Banded Shrimp, Emerald Crab
Corals: Open Brain Coral, Cabbage coral, 4 RBTAs, Melon mushrooms, green Zoos, yellow polyps, finger Leather, orange Zoos, Brown Zoos, Chocolate Zoos, Xenia, GSP, Kenya Tree Coral, 2 acropora SPS, blue sponge, candy cane
Fish/Inverts: Maroon Clownfish, Scooter Blenny, Coral Beauty dwarf angel, Sea Hare
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Old 02-19-2005, 06:08 PM   #3
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In my 73 gallon I have about 100 lbs of LR. I say about 1-2 pounds per gallon is enough.

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Old 02-19-2005, 06:11 PM   #4
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Hi Steve, Welcome to AquariumAdvice .com!!!
For the best biological filtration benefits of LR, shot for 1.5-2lbs/gal. Density does vary, but that is a good general rule. For some of the best aquacultured LR check out www.liverocks.com
It is pretty exspensive to start with all LR, so yo may want ot consider a combo of LR and base rock. A 50/50 ratio will eventually give you a nie LR. Check out www.hicocks.com for some cheap base rock.
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian
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Old 02-19-2005, 10:30 PM   #5
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I started with a medium amount that I had to cure. Then I added one pice at a timetill i got the desired amount. When you add one piece at a time every month it wont cause an ammonia spike. Take your time is the best advice. Good Luck
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