KonaBoy

Hey, just curious as well to put the heater beside the filter, or on the other side, I've heard both sides, and was just wondering what the general concensus was. Thanks,

Cory

SereneReyn

i put mine where there is the strongest current - or the most water flows past it. i've heard that many people put it under the gravel to hide it, but then i've also heard that that can overheat certain types of gravel, 'causing it to explode... or uneven heat distribution, that can cause the glass of the tank to crack. i'd rather have an unsightly heater showing than a potential crack in my tank!

mychl717

The Rena heaters will attach to the intake for your filter, so it heats the water as it flows into the filter.....

richard7467

mines in the middle at the back at roughly 30 deg to the horizontal (with my thermometer at the furthest point0 which will be hidden behind some wood...seems to be keeping my tank at the desired temp 26 deg guess i'll find out when its cycled and i add fish.

FL CommunityFans

Filter in the middle... heater far right.. thermometer far left.

tkfury

For my smaller tanks I just kept mine in the back right corner (filter being in the back left) with an airstone nearby. For the 75g right now I have two, one in the middle of each half horizontally. The plan was to keep them a little close to the surface to make adjustments easier than place them closer to the gravel, out of view but I've been too busy watching the tank to do that yet.

I don't think it really matters where the heater is for the smaller ones but for larger tank a lot of people do suggest two heaters, one on each side.

COBettaCouple

It doesn't seem to matter where we put the heaters since we have all smaller tanks.