Spa heater for freshwater tank?

[Edward Smith]

Any reason this would be a bad idea for a freshwater system?

Inline spa heater 1000w at 120v (http://www.ebay.com/itm/Hot-Tub-Spa-Universal-Flo-Heater-Assembly-Stainless-/371209668693?pt=LH_DefaultDomain_0&var=&hash=item566dd20855)

[Edward Smith]

Found one that is made of titanium: http://www.spadepot.com/shop/VersaTherm-Universal-Heater-Assembly-240V-120V-P9536C692.aspx

[Icefire]

maybe the wattage? at 1000w that's extreme

[Twistofer]

Maybe he's got a really, really big tank.

[Icefire]

looking at the sig it's 150g, I would not put more than 300w