Join Date: Jun 2014
Location: Cape Coral, Florida
For what it is worth, mine have been flat upon the top of the tank (so maybe 1/4 to 3/4 depending on evaporation from the water). They are sprayed and splashed a lot. I take them off ever 3-6 months and wash off with vinegar to get rid of the calcium deposits from evaporation. I have 6 of them, and all still work perfectly. I'd have to look it up to be precise, but i think it's been about 2.5 years. So warranty may not cover it, but it also doesn't seem to cause problems at least in a small sample set.
Latest tank build:
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