whats safe to use

[donkey77]

got a second hand reef tank 90g
it was taken down cause he upgraded to a bigger tank and never gave it a good clean, what can i use to clean it thats safe
thanks

[lastlight]

Fill with freshwater then toss a jug of white vinegar in. Let that circulate overnight and it will be spotless. Your pumps will love you too.

[thmh]

Fill with freshwater then toss a jug of white vinegar in. Let that circulate overnight and it will be spotless. Your pumps will love you too.

+1 on this comment!

~Tony

[donkey77]

nice thanks

[mrhasan]

nice thanks

And afterwards, you can use magic eraser (regular) to clean off the remaining stuffs.

[spit.fire]

Fresh water and a credit card