i bought a t5 2' 4 bulb light fixture from my local hydroshop. that was 4 months ago and since then the shop got sold to new owners. same store just new owners. would they warrenty my ligt as it should come with a 1 yr no hassle warranty. my problem is 1 light outta the 4 works fine the other 3 work but are really dull. switxhed the bulb and its still the same. really really dull. thinking its my ballast. has any one switched a ballast on these?