Huh just never thought of using alcohol in a tank before. I guess it would make sense as the alcohol would evaporate quickly. My other question is with power head placement i have a 110g tank with a mag12 return pump with about a 4ft head hight also plumbed with 1" pvc
having 2 90degree fittings and 1 check valve. I am also using 2 korali 750 power heads. My question is that i seem to have a dead spot in the one corner and wasnt sure if i place one powerhead there is it ok to point the flow upward so i dont disturb the sand?