ok well i think a 120 is better than the 30g with jagged gravel.. its a great store just 1 bad decision. so how would i syphon sand ive never had sand... and i really dont like bare bottom but if i have too...

and the 30 is pretty clean i didnt see to much poop and they just had a power head in there...
and the tea cup thing im new to stingrays and i heard theyre hard to keep so im sure i could if i did enough reasearch but i just want to have some expierience before i try to keep a tea cup sting ray