Cleaning Glass and Acrylic effectively

depends on what type of aquarium you have. i have a glass aq. and i know of a product that is good for acrylic. its called plas-tec and can be found in the link at the bottom of this post. i use it when cleaning my aircrafts front window, and the bottle and website specifically say its good for aquarium use (wouldnt use it on the inside though). if you dont get it on the inside of your tank, i would say use that stuff. relativly cheap and a 4 oz bottle would last you a long time as long as you dont use it every day.

as for glass, i just use that stuff too. it doesnt streak, comes off fairly easily, and can be bought by the gallon if you have a lot of tanks.

https://ssl.adhost.com/mermaid/merchant.cfm?id=8&step=2