Since they're LED bulbs obtained at a hardware store, you won't be able to find PAR values unless you can rent a PAR meter or care to buy one. Since the latter isn't very practical, you can only guess.. or make best guesses based on lumens and Kelvin (the light measurements usually found on household LED bulb packaging). You'd probably just have to assess how your plants are doing with the light and if any algae is appearing. Then make adjustment in photoperiod. What type of plants are in your 10 gallon? Are you dosing ferts, CO2 , liquid carbon?
See the problem is that not all LEDs are created equal. Using LEDs that aren't specifically made for aquariums makes it tough to figure out your lighting level -- unless of course, you're tech savvy and well studied on the subject. There's just too many variations out there. That's why I like aquarium LED fixture manufacturers like Finnex, Current, and BML... They release PAR data so you as a consumer/hobbyist can make informed decisions... They sort of give us a standard or benchmark to make comparisons from.
