What can I use or buy to heat my water tank?

[LLgreen420]

I have a water tank reservoir of 300 liters/80 gallons and the best way I use to heat my water is by buying aquarium heater's but with time they end up frying becuase of the nutrient I put in the tank when I feed so I usually take them out and clean them but in the long run they end up breaking does anybody have a solution for this or does anybody know a good product I can use to heat my water I live up north so it's always cold and I have well water so I use an ROM but the water always comes out cold I always heat my water to 70° but usually it stays at 55° to 60°

 

[MIMedGrower]

Titanium res heater?

Active Aqua HGRH350W - Titanium Reservoir Heater | 1000Bulbs.com

Shop for Active Aqua HGRH350W titanium reservoir heaters to keep your plants' water at manageable temperatures. Low prices on water heaters at 1000Bulbs.com!

www.1000bulbs.com

 

[oldskol4evr]

try a electric blanket around your res with a fused power stick,if it blows it pop the breaker not your fuses,just a idea to throw about

 

[The Jewels]

Are they breaking or frying?

If they break - that's on you.
If they are frying - also on you. Keep the head above the waterline.
If the waterline stays constant they will last nearly forever.

They will always be the most cost effective choice.
Other options include stealing heat from a magnetic hps/mh ballast or 'solar' loop from the growlight. Black buckets absorb heat.
You can insulate the res. and use submersible pumps.

Thats all I got,,,