hey there, hop esomeone can help me out. i just purchased a 90 gal tank.i was wondering. i have a 20 oz C02 cylinder and a regulator with low pressure and high pressure gauges, and a counter. would that be worth hookin up to the 20 oz ? i currently have 7 amazons swords,a melon sword, a rose sword, grass n a bunched hornwort. just curious. i don't even care if i hafta refill frequently. oh yeah and my lighting is 100 watts.