live rock??

RL321 · 06/21/2006, 10:10 PM

when it comes to rock per gallon are we in general talking about actual weight or surface area? For instance one rock 5lb. very dense and another 5lb. rock not as dense with alot more surface area. Would the less dense w/more surface area throw off the 1-1.5lb per gallon??

doox00 · 06/21/2006, 10:16 PM

the 1.5 to 2 pounds per gallon is more of a guide, porous rock is best overal, get away with less weight this way as well.

mcurl98 · 06/21/2006, 10:20 PM

I think it's all about surface area. Most of the good rock comes from Fiji and similar areas-and 1 to 1.5 pounds per gallon is often used. The rocks are porous and relatively light for their size. If you go with a dense Atlantic type rock, you might have to go 2-2.5 lbs per gallon

Tate · 06/21/2006, 10:27 PM

Surface area is what is important. You can tell by looking whether you have enough or not. Weight is irrelevant, that is just how you are charged for it.

Sk8r · 06/21/2006, 10:29 PM

My tank, for instance, is arches and caves, but the top of the rocks is within about 8 inches of the surface ranging down to about 12. I have no idea the poundage, but there's a good base for setting corals. And the amount is important, because it's part of your 'filtration.'

06/21/2006, 10:10 PM	#1
RL321 Registered Member Join Date: Jun 2006 Location: east central florida Posts: 352	live rock?? when it comes to rock per gallon are we in general talking about actual weight or surface area? For instance one rock 5lb. very dense and another 5lb. rock not as dense with alot more surface area. Would the less dense w/more surface area throw off the 1-1.5lb per gallon??

06/21/2006, 10:27 PM	#4
Tate Registered Member Join Date: Feb 2005 Location: Lake of the Ozarks, Missouri Posts: 388	Surface area is what is important. You can tell by looking whether you have enough or not. Weight is irrelevant, that is just how you are charged for it. __________________ 100g long FOWLR Current Tank Info: 100g fowlr and NanoCube 6g

06/21/2006, 10:29 PM	#5
Sk8r RC Mod Join Date: Feb 2006 Location: Spokane WA Posts: 34,628 Blog Entries: 55	My tank, for instance, is arches and caves, but the top of the rocks is within about 8 inches of the surface ranging down to about 12. I have no idea the poundage, but there's a good base for setting corals. And the amount is important, because it's part of your 'filtration.' __________________ Sk8r Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low. Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.

06/21/2006, 10:16 PM	#2
doox00 Premium Member Join Date: Feb 2006 Location: West Michigan Posts: 928	the 1.5 to 2 pounds per gallon is more of a guide, porous rock is best overal, get away with less weight this way as well.

06/21/2006, 10:20 PM	#3
mcurl98 Premium Member Join Date: Mar 2006 Location: san jose, ca Posts: 615	I think it's all about surface area. Most of the good rock comes from Fiji and similar areas-and 1 to 1.5 pounds per gallon is often used. The rocks are porous and relatively light for their size. If you go with a dense Atlantic type rock, you might have to go 2-2.5 lbs per gallon