Just an update on more findings, although I'm still baffled :-(
I took the tank hood to a nearby aquarium shop, and they:
Tested both of my new tubes, which work fine
Checked the plug - all good
Tried new starter units - still nothing
They were very helpful and seemed to have a lot of...
Ah - interesting... I did have that wrong and was meauring DC. Measuring AC voltage with the bulb removed I get up 36V on one end of the pins, and about 4V on the other end.
So that doesn't sound too far out from what you get with your bulbs. I would be shocked if I'd managed to buy two faulty...
Good question - I hadn't thought about trying to do some maths on it! It seems to osciallate between 0 and 2.7 volts, which is too low right? Since it has a 3 amp fuse I guess it must need 5+ volts to get to 15 watts?
I think you've already got me onto something: my local shop only sells one...
Hi all,
Just found this forum that looks like the best for help with aquariums, so I'm really hoping someone can help me with this one.
I have a smallish tropical fluval tank that takes 2 x 18" flourescent tubes. I've had it for over a year, and have only had to replace one bulb when it...