LR question

FlyingFish65

New member
I'm starting a 75 gal reef. I've been told to "save money" and buy dry base rock and then top with more expensive live rock? Any experience with this? Also, any good LR internet vendors? Thanks.
 
Would this not defeat the object of filtration?

IMHO, if you have good mechanical filtration you can get the "cheaper" base rock and in time it will look good but I don't think that it will ever serve as a replacement for LR, due to base rock being very dense compared to LR which is full of holes for water to pass and be filtered by the bacteria within.
 
Sounds like it is a balance of theory (live rock is best) and practicality (live rock is expensive). Is there really any difference between Pacific vs Carribean rock- except maybe weight?
 
I've heard that Carribean rock is denser, which, IMO, is not a good thing. Less denser rock => more pores => more surfaces for bacteria => more nitrifying bacteria.

SeanySean, I think that you could find pretty porous base rock. I've seen some on eBay, I think, those rocks are from Hawaii.
 
You still want some liverock in the tank. I would get 50% liverock and 50% baserock. Liverock will also help filter your tank.
 
Reef bones are different, they are the same as LR only dead and dried, however your LR will feed the bones and in time (not sure how long) but will develop into LR once again.

The key to this post is how much load you are wanting to put straight off, bones will take time to mature so have to be discredited from filtration potential. If you are backing up with mechanical, or have a low load then I personally think you should be ok.

On which is best, not sure, prices are not always the best sign of what is better, more the farming of the rock, how pretty iot looks etc, not always how porous or effective
 
What about live sand? I am planning on a 4" DSB. Should I use all aragonite? Mix with crushed coral? Buy the dry, bagged live sand or buy some out of a tank from the LFS?
 
I agree with SeanySean, Reef Bones are quite dense. They are quite cool looking, but that's about it. Not very good for filtration.

I can't say when base rock will get fully populated with bacteria - it depends on a few things: bio-load, water movement, etc... In any case, when seeded with LR your base rock will become LR too in no time. Coralline algae growth on base rocks takes a bit longer... ~ 6 month or so.
 
<a href=showthread.php?s=&postid=6532519#post6532519 target=_blank>Originally posted</a> by FlyingFish65
What about live sand? I am planning on a 4" DSB. Should I use all aragonite? Mix with crushed coral? Buy the dry, bagged live sand or buy some out of a tank from the LFS?

Don't bother with LS that is in the plastic bag, all it has - bacteria. LR will seed your sand way better than any product.

As far as DSB goes, get sand that is as fine grained as possible. Aragonite is better, but silica-based had been accepted too by some reefers. Definatelly not use crushed coral, it traps detrius.

Then get as many cups of LS from different reefers or LFSs to introduce some higher-than-bacteria live to your sand: i.e. worms, pods, etc...

hth
 
I surfed the Hawaiian Rocks website. Is this for real? Is it really that simple? Lay down dead, dry rock (50%) and then top with good LR (other 50%), keep the bio-load low for a few months, and step back and watch?
 
Yes, but remember, keep the bio load LOW, if you want to do 50-50 then 1/4 your recommended load (New tank- low filtration etc)
 
cure/cook dry dead base rock is not so cheap. water changes.
smells like a sewer. after 4 or 8 weeks you have good rock
ready to go all kinds of algie (hair algie will be the first). in the
long run you might save $ with all L/R. when you order your L/R
vendors send some great rock,not so great rock and some so so
rock all in one box. use so so rock at the base and great stuff at
tha top. 75 gal. reef built on a good foundiation will last years.
 
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