I have a Pentair light in my spa taking on water. Series is 7810XX, 100 watts, 120v.
Pentair makes several models and I cannot tell what the differences are. If I go with a 7810 series, (Spabrite, I believe) it's more money than the 7711 series (Aqualite).
Is there a size difference?
Note: I'm going to drop an LED replacement bulb into this, so the quality of the bulb it comes with doesn't matter.