sprry to hear abotu the light . your fish selection is weak . I love the neons, if they stay alive for you great !! you need to pick a school or 2, and let go of the rest . the livebearers, (molly, platy, swordtails, ) like to live with thier own kind and breed they have lots and lots of babies !!! having 1 or 2 sounds aweful to me .
and to boot your bigger fish (molly*) are most likley going to eat your shrimp, you may be ok, but watch out. amanos are bigger than other shrimpys, but I would be wary. I like the rock castle, I myself was going to make me one, bougth the slate and everything , just havent done anything with it ... LOL ~~~ the moss can be stretched out very very thin, it wont die that way , it dies if too think the underneath part that gets no light, or not enough, dies.
if you are planning on driftwood, look around here, read other peoples tank journals !! that is where you get the great ideas, and find out the great sellers of nice items . your tank could be a masterpiece, you need to take the time to do your research BEFORE YOu buy ~ this saves $$ and makes a nice tank . good luck in the planted world . I will be watching . I have the same 20 high . I havent bought anything for it yet. I am looking for others, watching the eqiupment they buy , and seeing what they are creating , thank god I do have my 45, 55, and 10 & 5 planted tanks to keep me BZ< LOL
Good luck with your light, hope they replace it for ya . your plants need it . watch your plants too, they will tell you if they are lacking somthing . are you using ANY ferts ??
I will be watching , have a great day ~~