SeaTila
New member
I think this is the advantage of being able to have two systems up and running at once. I read salinity, temp and ph match is important...just using new water or even a 20% old water to new 80% would work if your existing tank has had a good amount of new saltwater changes ...then kh, ph, salinity etal would be closer between the tanks. Maybe it doesn't matter but the objective is to save 100% of the good guys.-SI just did this moving my 57 rimless inhabitants to my new (used) 75. I started with new ro/di water and salt, added new sand (about 50 lbs), added some extra pieces of live rock from the 57 to the 75, started the skimmer, heater and lights and got the sump going on the 75, plus a Koralia for flow.
After 2 weeks, ammonia and nitrites were zero, and just this past Sunday, I drained 57 rimless water into a bucket, netted the fish/inverts and put them into the bucket, moved all the live rock over to the 75 and arranged it, drip acclimated the fish/inverts and after an hour, added them to their new home with no losses. Turned out great! I've been slowly adding the old sand scoop by scoop to the new tank to deepen the sand bed - I haven't had any issues, just a couple scoops over the past couple of days.
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