The Planted Tank Forum - Reply to Topic
Thread: What heater to use in a 2.5 gallon with CRS? Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
02-26-2013 07:04 AM
rocksmom It's a bit pricey, but I love my Archaea 25w heater. The heater itself is tiny (maybe 5" max) and has a separate temperature control near the plug. I've recommended this heater several times on the board now, love the thing. Finnex has similar ones that I think come in both a "dial" and digital version.
02-26-2013 07:00 AM
What heater to use in a 2.5 gallon with CRS?

all my 25w adjustable heaters fit in a 2.5 gallon just fine. much more reliable as well. the miniature ones have a reputation of overheating or under heating... I frequent a betta forum, and faulty mini heaters has always been an issue for small tanks... so now we recommend the 25w adjustable heaters ... usually hagen elite, hydor theo.
My personal favorite is a no name brand from fleabay for about $6

my hagen elite is about 7in and a bit.. I can measure it in the morning. amazon's measurements is usually for the packaging
02-26-2013 06:50 AM
Assassynation check out topfin, they have a 7.5 and a 15 watt that are flat and the 7.5 keeps my edge at 75 degrees and fits in my aquaclear 20 fine.
02-26-2013 06:46 AM
TwoTacoCombo dr fosters lists it as 7". I know in my 5gal with about 2" of substrate, the adjustment knob is just above the waterline and the bottom is just above the sand. Not sure how deep your tank is, but you can always turn them sideways. Hydor also makes an under-gravel heating system in 25W, but it's a bit pricey when you include the heat controller.
02-26-2013 06:07 AM
pandamonium Thanks Taco, do you happen to have the dimensions of the heater? On Amazon it says 10 inches long but that seems ridiculous for a 25W heater!
02-25-2013 05:59 PM
TwoTacoCombo We have a 5 gal betta palace with a 25W Hydor in it that seems to do a good job. We had one of those 10W non-adjustable heaters, but it never could get the tank to a proper temp. You may want to get one of the 25W units, and put a separate temp controller on it for added safety so you don't come home to shrimp soup.
02-25-2013 04:48 PM
What heater to use in a 2.5 gallon with CRS?

Hey everyone,

I set up a tank and am in the beginning stages. Right now, I am wondering which heater would work best in the tank. My house temperature at night gets into the 50s, which is a little low for CRS I think. Was looking at small heaters that would fit in the tank and maintain about 72-74 degrees F. Right now the only one that seems to be able to fit is the Hagen Elite. Any other suggestions would be great! If I can go without one that would be great too, but I am not sure about doing that.

Thanks for looking

Posting Rules  
You may post new threads
You may 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 Off

For the best viewing experience please update your browser to Google Chrome