Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > Advanced Topics
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 09/13/2016, 03:44 AM   #1
ThRoewer
Registered Member
 
ThRoewer's Avatar
 
Join Date: Jan 2015
Location: Fremont, CA
Posts: 7,768
How low can you go with Reef tank temperatures?

What is the lowest possible water temperature for a tropical reef tank?
Right now I keep my tropical reef tank between 24 and 27 C.

I looked into lowering it further when I planned to add a group of ventralis anthias, though Capsalid Monogeneans scrapped that plan. For now I'm looking into it to possibly lower energy cost and just in case I try the ventralis again.

I've seen post where people kept tropical reef fish in the 20 C (68 F) to 24 C (75 F) temperature window of the warm temperate zone. Fish that have a wide depth range are likely more tolerant of lower temperatures, but I could see issues with shallow water species like clownfish (A. percula), shallow water anemones (S. gigantea) and of course corals.

So, how low can you go without running into problems?


__________________
Pairs: 4 percula, 3 P. kauderni, 3 D. excisus, 1 ea of P. diacanthus, S. splendidus, C. altivelis O. rosenblatti, D. janssi, S. yasha & a Gramma loreto trio
3 P. diacanthus. 2 C. starcki

Current Tank Info: 200 gal 4 tank system (40x28x24 + 40B + 40B sump tank + 20g refugium) + 30x18x18 mixed reef + 20g East Pacific biotop + 20g FW +...
ThRoewer is offline   Reply With Quote
Old 09/13/2016, 07:00 AM   #2
devastator007
Registered Member
 
Join Date: Sep 2014
Posts: 1,509
I'm not sure how low you can go without problems, but one concern I'd have with pushing the boundries would be how long your tank could last is power was lost. Lets say 70F is the lowest you can go. If you keep your tank at 78F and lose power, your tank can drop 8 degrees before issues relating to temperature start. If your tank is already at 70F to start, than you'll notice issues very quickly when the power eventually goes out.

If looking to save money, you could look into insulating any part of the tank that isn't for viewing. You can get foam sheets made for insulating house walls and cut it to size, then tape or add a bit of glue and stick it to the back, and maybe a side or two of your display, and all 4 sides of your sump.

Actually, looking at your setup, it looks like you have a multiple tank system, which means you do have a lot of surface area for heatloss.


devastator007 is online now   Reply With Quote
Old 09/15/2016, 06:46 AM   #3
Moort82
Registered Member
 
Moort82's Avatar
 
Join Date: Sep 2008
Location: Norfolk, England
Posts: 1,576
Fish wise I think temperature is less important but corals are more finicky. I knew someone who went on holiday for a month. Two days before they left they did a water change and unplugged the heater. When they got back the fish were fine but the corals looked a little annoyed they then discovered they didn't plug the heater back in. The tank sat at a room temperature which was 17-18c.
I've heard similar stories several times were heaters failed so they can accept it if only for short periods. I have also read but can't remember where that under 23c corals have a hard time calcifying, so if growth is important then that might set your limit. I myself have a 23.5-24c winter minimum and in summer it runs a couple of degrees higher for free.


Moort82 is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -6. The time now is 12:07 PM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.