LR how much should i put?

[sunnymau]

just what to know how many kg of LR should i put into my 250L tank? different got differeent guide line. some say to the porpotion of the tank; some say fill up one third of the tank, no culculation needed? which i should i follow?

[ah^siao]

up to yourself to put one.. if u feel that u need more Live rock then put more lol.. if u feel u need lesser than lesser... roughly la?

[islander]

just what to know how many kg of LR should i put into my 250L tank? different got differeent guide line. some say to the porpotion of the tank; some say fill up one third of the tank, no culculation needed? which i should i follow?

theres no proper guide but u can use tis formula

1 pound of Lr for 1 Gal of water

[sunnymau]

wil the amount of LR affect the quality of the water? more LR can cultivate more bacteria right?

[arcanehacker]

it would also depend on the types of fishes ...

[islander]

wil the amount of LR affect the quality of the water? more LR can cultivate more bacteria right?

definitely yes,as ur live rock and sand serves as a biological filtration for ur water..mine tank is 350L with 40kg of LRs...looks not enuff to me leh...

[sunnymau]

is this mean that the more the better? (provided with a good circulation of water)

[sunnymau]

it would also depend on the types of fishes

i thought it is depend on the number of fish instead? can u enlighten me?

[jas_soh]

amount of lr in a tank also depend on the quality of LR u get.. if u get all dead rocks den it does not serve much purposes... get those very good quality lr such as fiji rocks and you may need less....

you may also want to consider the amount o rocks according to your intention for the tank. eg you may wish to build towers so that some of your corals can get more of the lights for good health.

[arcanehacker]

i thought it is depend on the number of fish instead? can u enlighten me?

if you are keeping smaller streamed line kind fishes, you could add more LR.

Fishes like Lionfish and Tang would need more space therefore lots of LR would hinder their movement..

[Gouldian]

wil the amount of LR affect the quality of the water? more LR can cultivate more bacteria right?

Hi Sunnymau,

IMO the more the merrier. But ensure that you get the better qualty LR such as Fijii LR especially cured ones. FYI Cured LR means that most Nasties (Mantis shrimp, crab) has been remove thus you will not suffer from future "unknown" losses of live stocks.

Hope this helps.

[arcanehacker]

Hi Sunnymau,

IMO the more the merrier. But ensure that you get the better qualty LR such as Fijii LR especially cured ones. FYI Cured LR means that most Nasties (Mantis shrimp, crab) has been remove thus you will not suffer from future "unknown" losses of live stocks.

Hope this helps.

NOT.. cured doesn't mean crabs, mantis and other pest do not exist... It just means its cycled.. There is no guarantee that pest wouldn't be bought together with the rocks..

[eaquarist]

Just to add on...LR serves as a Biological filter and the place for the growth of nitrifying, heterotrophic bacteria and other detritivores but most importantly denitrifiers in the deeper crevices. The "Berlin" system of keeping marines depend only on LR with no substrate...those systems stock their entire tanks with LR. The current trend also includes DSB, Plenum or the Leng Sy mud refugium with macroalgae scrubbers.

IMO, you should first decide on the system you wish to adopt for filtration and whether you should have a pure reef set-up without fish, FOWLR or a mix fish and coral community tank. There is no definite answer to your question. The amount of Bio-load can be determined by the number of fish as well as the type of fish. Big eaters like groupers will generate more waste. LR from different regions of the world also vary in their porosity and hence their ability to house bacteria.

The use of LR depends very much on the aquascape too as mentioned ...open space with sand reflects more light and brightens up the place. However, a reef face replica will look empty without the built up of rocks.

[Domino]

Hi!

I had the same question when I started. My tank is 4'x1.5'x1.5, so about 250l. I used the 1lb/ Gal rule and I now have about 30kg of LR in my tank. I plan for a FOWLR. my thank is now cycled and I'm adding LS.

Will you plan to have a DSB? I recommend it to take care of your NO3.

[sunnymau]

wat is IMO?

[jas_soh]

IMO - In My Opinion

[sunnymau]

will coral add on to the bio load? do they prdoce watse?

[terryansimon]

as compared to big poopers like tangs, not really. (=

[Gouldian]

NOT.. cured doesn't mean crabs, mantis and other pest do not exist... It just means its cycled.. There is no guarantee that pest wouldn't be bought together with the rocks..

Dear Arcanehacker,

With all due respect I beg to differ, cycled LR is NOT cured LR. I know there are lots of LFS that claim to cured their LR but in fact just throw the LR into a tank with filtration in order for the nasties will slowly die off - this is not considered as curing. Curing besides the above all means that we have to scrub the LR clean from all debris, in fact a perfectly cured LR will be white rather than having algae encrusting on it. During this process, all surface inhabitant will die off leaving only the beneficial bacterial hidden in the pores of the LR.

Anyway, I was just expressing my views, I hope we can treat each others views and coments with all due respect rather than just cutting each other short.

[arcanehacker]

Dear Arcanehacker,

With all due respect I beg to differ, cycled LR is NOT cured LR. I know there are lots of LFS that claim to cured their LR but in fact just throw the LR into a tank with filtration in order for the nasties will slowly die off - this is not considered as curing. Curing besides the above all means that we have to scrub the LR clean from all debris, in fact a perfectly cured LR will be white rather than having algae encrusting on it. During this process, all surface inhabitant will die off leaving only the beneficial bacterial hidden in the pores of the LR.

Anyway, I was just expressing my views, I hope we can treat each others views and coments with all due respect rather than just cutting each other short.

lets say it is, try getting truely cured rocks for cycling and see how much die-offs and pest there is.. I bet there's still crabs and other pests running out...

[Gouldian]

Please note there is a word "most" in my earler sentence as you can see below.

"FYI Cured LR means that most Nasties (Mantis shrimp, crab) has been remove thus you will not suffer from future "unknown" losses of live stocks. "

I did not say that there "will not be any nasties".

I rest my case.

[jas_soh]

*blow 6-in-1 DIY fanS at thread*

[arcanehacker]

*blow 6-in-1 DIY fanS at thread*

think you need a chiller for the whole SRC.. .. its becoming more hot nowadays.. maybe the weather hot so people on short fuse..

[jas_soh]

think you need a chiller for the whole SRC.. .. its becoming more hot nowadays.. maybe the weather hot so people on short fuse..

pls understand that i dun have money to buy a chiller and am doing my best in using 6 fans.....what's more, they are DIY.