I've a 10 gallon heavily-planted aqua-terrarium with 2 9-watt screw-in
C.F. 6500K bulbs and a heavily-planted 15 gal. cube tank with one
9-watt 6500K and one 20-watt 6500K of like kind and they've both been
running with these for well over half a year and they're doing
wonderfully... never had such dense plant growth. I'd recommend them
personally. Sorry you had such bad luck with them.