Heater question

asque2000 · 04/27/2020, 06:09 PM

Hi all, longtime listener, first time caller. I have been keeping jellyfish for several years now, and they're doing quite well. I recently converted my old jellyfish tank to a 10 gal. nano tank with a couple saltwater fish. I put them in the other day, and they're doing pretty well after about 48 hours.

There were a few things new to me. Filters, (got one, works well enough) and heaters. I had an old heater I used for cycling (25 watt Hydor) and it turns out the thermostat on it crapped out. I can turn it to the lowest setting and it won't turn off? Here's the other thing, 25 watts is a bit small for a 10 gal. tank. The heater has been running at full tilt for 2 days and the water temp is coming in at 78 degrees, which is right where the fish apparently like it (76-80). Is there a need to replace it? Is there as risk of damage if the thing never turns off? I know this is a silly question but I'm just kind of new to this "vertebrate" thing.

Vinny Kreyling · 04/28/2020, 09:10 AM

Replace it. There is a chance of it heating too much.
Heaters should have a controller for safety as they are THE#1 problem with a tank.
Ranco controllers or InkBird are not that expensive.

Sk8r · 05/02/2020, 10:59 AM

A bad heater can burn your house down. Spend a little; and replace it if ever it is for any reason compromised. Eheim is a good brand.

heritage · 05/03/2020, 06:17 AM

Eheim is a good heater and what I run in my tank but should be run on a controller as well.

billdogg · 05/03/2020, 08:23 AM

I'd have already replaced it. I'd go with a 50W just so it doesn't have to work so hard. I like the eheims as well, but you might find they are too long to fit. I'd probably look for a small titanium heater and controller.

04/28/2020, 09:10 AM	#2
Vinny Kreyling Registered Member Join Date: Nov 2002 Location: Miller Place, NY Posts: 7,206	Replace it. There is a chance of it heating too much. Heaters should have a controller for safety as they are THE#1 problem with a tank. Ranco controllers or InkBird are not that expensive. __________________ 250 gallon mixed reef, 2 Reefbreeder's Photon V 2, Deepwater BLDC 12, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.

05/02/2020, 10:59 AM	#3
Sk8r RC Mod Join Date: Feb 2006 Location: Spokane WA Posts: 34,628 Blog Entries: 55	A bad heater can burn your house down. Spend a little; and replace it if ever it is for any reason compromised. Eheim is a good brand. __________________ Sk8r Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low. Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.

05/03/2020, 06:17 AM	#4
heritage Registered Member Join Date: Jul 2011 Location: PHILLY Posts: 561	Eheim is a good heater and what I run in my tank but should be run on a controller as well. __________________ Chris Last edited by heritage; 05/03/2020 at 06:32 AM.

05/03/2020, 08:23 AM	#5
billdogg Registered Member Join Date: Apr 2008 Location: Grove City, Ohio Posts: 10,806	I'd have already replaced it. I'd go with a 50W just so it doesn't have to work so hard. I like the eheims as well, but you might find they are too long to fit. I'd probably look for a small titanium heater and controller. __________________ I'll try to be nice if you try to be smarter! I can't help that I grow older, but you can't make me grow up! Current Tank Info: 120 mixed reef with 40b sump, RO 150 skimmer, AI Sol Blue x 2, and a 60g Frag Tank with 100g rubbermaid sump. 2 x Kessil A360w lights, BM curve 5 skimmer

04/27/2020, 06:09 PM	#1
asque2000 Registered Member Join Date: Apr 2020 Posts: 7	Heater question Hi all, longtime listener, first time caller. I have been keeping jellyfish for several years now, and they're doing quite well. I recently converted my old jellyfish tank to a 10 gal. nano tank with a couple saltwater fish. I put them in the other day, and they're doing pretty well after about 48 hours. There were a few things new to me. Filters, (got one, works well enough) and heaters. I had an old heater I used for cycling (25 watt Hydor) and it turns out the thermostat on it crapped out. I can turn it to the lowest setting and it won't turn off? Here's the other thing, 25 watts is a bit small for a 10 gal. tank. The heater has been running at full tilt for 2 days and the water temp is coming in at 78 degrees, which is right where the fish apparently like it (76-80). Is there a need to replace it? Is there as risk of damage if the thing never turns off? I know this is a silly question but I'm just kind of new to this "vertebrate" thing.