Who Gives A Fish Forums

I suppose contacting the manufacturer is the last resort, I'll try my LFS first and see if they can order some in for me. Thanks for the suggestions, guys.

Sorry about the confusion, I should've been more specific. It's indeed the length that's the issue - those bulbs are a really unusual size. I've measured them and they're roughly 23 and 29 inches, which seems to be a bit of an oddball dimension. Even the ADA ones I looked at don't appear to match up.

I'm having a right old moan today. Got my Aqua-One AR850 and I'm in the market for some new bulbs - the originals are on the way out, flickering like mad. Saw a post from Themuleous about www.lampspecs.co.uk, so I had a gander, but no joy - they don't stock the sizes I need.

Further digging online ...