Don't get caught up in the brand, Current puts out a low quality equipment on almost everything.
I have a few 36-watt bulbs that may fit your application. Your ballast will likely run anything in the 28-36watt range, what is most important is:
1) length of bulb (what will fit your housing) and
2) Base type (ie: straight pin or Square Pin)
I have the following
2 x 10,000k white 36-watt straight pin
2 x Actinic 36-watt straight pin
1 x 50/50 36-watt square pin
All brand new in boxes: $10 each
I also carry 28-watt, 55-65 watt, and 96-watt, & 96-watt Quad