Under gravel heater

[Steven c]

Good evening
Thinking of getting a under gravel heater for new set up, thought I'd pick your brains on the idea?
Pros...?
Cons...?

 

[foxfish]

What is that? do you have a link?

 

[Steven c]

It's a heater that is concealed under the gravel same as under floor heating. JBL do one.

 

[foxfish]

Perhaps you are talking about a heating cable, they were very popular in the 80s because it was believed the cable caused movement of water within the gravel bed & drew down fertiliser to the plant roots .... every one was using them at the time.
The cables were low voltage & low power so they did not actually supply enough heat to get the take warm enough.

 

[Swordplay]

I have used one in the past. Foxfish is right it won't heat your tank so you will still need another heater. I did get good plant growth when I used it in my sand but with all the substrates and additives around now i don't think it would be worth it.