Hopefully this is not too stupid of a question, but here goes.....I have a small pressure filter with UV light that my Dh got from Home Depot. It's pretty worthless as a mechanical filter so we built a Skippy, put pieces of irrigation tubing in the pressure filter and mostly keep it for the UV light. Problem is, I need to get a replacement bulb and can not find the ones that are for that brand. Was wondering if the bulbs are pretty much universal as long as you get the same watts? I saw some Tetra UV bulbs on Ebay and was wondering if I could use those with my clarifier?