Tank Upgrade??

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EBR

Aquarium Advice Activist
Joined
Jan 11, 2004
Messages
140
Location
Maryland
Hi --

I've got a fairly new 55 gal tank that's been established for better part of a year, with the recent addition of about 120# of LR a couple of months ago (which has settled in quite nicely :) I love the rock, but admit that I may have gotten a bit too much. Not for the fish's sake, but for mine -- it's tough to get between it and the glass in several places to clean, and there is not much open area on the bottom (ie, that I can reach to clean) between the rocks for substrate critters.

Sooooo.... I'm wondering what it would take to upgrade to something like 120 gal. Obviously, I'd use all of the existing water, substrate, etc -- but how best to make up the difference? Once the new tank is in place, would I simply add new substrate and freshly mixed water? Or would I have to cycle that much water (65 gal) first in a another tank, and THEN add it to the new one?

Thanks.
Matt
 
Well you would need larger power heads, and mabye a new skimmer, but other than that just use existing, then add as needed. Just use new water. I would leave the fish in the 55, with some LR. That way the new tank can settle just to be safe.
 
Adding water wont cause the tank to cycle again. Put the tank in th place youw ant it. Then add the substrate and then start filling it with water that matches your existing tanks SG. Once you have about 1/2 of the tank filled you can transfer the rocks over as well as the fish, corals, etc. Then transfer over the old water from the existing tank. This will lower the shock value on the fish and other inverts. Then fill the tank with new water.
 
Or you could start doing a weekly or every other week water change and use the water removed from your old tank to fill your new. Would take a little time but the shock to your fish should be almost non-existant. Do a bed of fresh substrate, but some of your old over with every time you add water for your top layer.
 
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