Moving from 110 to 90 gallon

Todd Sentner

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Hello everyone! I started this amazing hobby 9 months ago and have always found the threads on here very useful so I figured I would finally create an account and start posting myself. Here’s my first question..(sorry it’s a long explanation) just want to be thorough

I started with a 110 gallon tall tank (30 inches high!),non drilled and an over flow. Due to the pain of having such a deep tank for maintenance and the risky overflow box I decided to switch to a drilled 90 gallon which I love! I moved about 70 gallons of existing water, most of the live rock, and bought 60 lbs of new aragonite sand a week ago.

My challenges-

I had a small breakout of Cyano in two corners of the old tank so I removed as much of it as I could from the rock that I transferred and ditched a few of the rocks that were pretty bad. I also have some some bubble algae on a few of the rocks. I recently added a BRS duel reactor running gfo/ carbon and have not had any phosphate readings for about a month. I also have had little to no nitrate in months.

I have lost two tangs, (powder brown, yellow),one clown, two anthias to ich. I still have 1 clown, 1 anthia, 2 chromis that survived and look great.

I made the huge mistake of not coral dipping or quarantining my fish prior to adding. I started noticing the bubble algae and Cyano when I purchased a few extra pieces of live rock and corals from a private seller at his house(I’ll never do that again!)

Maintenance schedule/feeding-
I do approximately 20 gallon water changes every 3-4 weeks with RO water and coral pro salt. (1.025)I have been feeding frozen mysis once a day(half a cube), sometimes every other day.

Here’s my questions-
did I transfer everything correctly? Should I start seeing the bubble algae and existing Cyano die off? Can I ever get another tang if I keep these fish in the system since I most likely still have ich in the tank?

Livestock
12 corals(all doing very well)
Hammer, frogspawn, Xenia, star polyp, blasto, Duncan, cyphastrea, zoas, toadstool leather, sinularia leather, pocillipora, green monti.

Equipment-
(2)- AI hydra 26s
Eshopps R100 sump
Classic 150 reef octopus skimmer
Dual BRS reactor
Ice Cap 3k Gyre

Sorry for the length and thank you for reading and providing any feedback or tips. I appreciate it!! I uploaded pics of the 90 and 110 set up.

F3842A5C-F434-41F9-B30B-4F294AD51F62.jpeg


C3E3FD23-BEA6-4FBD-9AA5-98DEC5575B29.jpeg
 
Last edited:
Todd,
Thanks for signing up and Welcome to Reef 2 Reef

To me the cyano is from your nitrates bottoming out.

I'd rather be high on phosphates and nitrates than zeroed out.

Here's and water chemistry guideline, but I'm going to back off, so that other Reef 2 Reef members can help you out too.

http://www.reefkeeping.com/issues/2004-05/rhf/index.php

Again,
Welcome to "our" Reef 2 Reef, family :)
 
Welcome to R2R, nice looking tanks:)
 

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