In the single lamp configuration I tested all the starters I have for duds, they were all fine, and rated for between 5 and 40watt. Strangely once i managed to switch it on without the starter even in.
I have temporarily added another balast to drive a second tube until I can figure this out.
The ballast is very nice, makes no sound, and is half as hot as the other one.
Cape Town, South Africa
25 Gal. 54watt, DIY CO2 5 Angelfish, 1 male dwarf gourami + 2 females ,2 female betas, 3 albino corys, 2 pepper corys, 2 CAEs
15 gal. Dwarf gourami fry tank
10 Gal 3 variatus platies, 4 black sailfin mollies- 5 Gal guppy birth tank with dividers
5 Gal guppy frytank
1 Gal guppy frytank
40 Gal Pond with 10 female guppies, 1 male tons of fry.
On various pieces of furniture, 6 cats!