Cleaning Algae from acrilic tanks

[hardcyder]

I have 2 one gallon acrilic tanks. What I sometimes use is an old toothbrush that I keep just for aquariums. Seems to get the algae without scratching. Just make sure the bristles are the only part that touches the acrilic. Any other methods you guys use?

 

[obedey]

my plastic tank didn't get hardly any algae in it. I used the same stuff as is on those magnetic cleaners, but i don't know if it scratches it. I only had to do it once and i haven't seen any scratches. I used to just wipe it over with a dishwashing cloth every week or so. I don't know if that did anything to stop the alage.