Quote:
Originally Posted by Uncle99
If it uses an IR sensor, best suited where the water is calm.
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Same can apply to floats.. I typically put a "snail guard" around my floats which not only protects from a snail hanging on them but also helps dampen any "waves" in the surrounding water from powerheads/pumps,etc...
Many of the nicer ATO systems have enough hysteresis built in where "waves" aren't an issue but some will just click on/off with each passing wave..