[MNWC]

How do you get rid of algae in your ibcs ??

Is there a solution you can add or am i just gonna have to swill it out ??

Marcus...

[Nathanael Jones]

Milton is a good solution that won't leave a residue like some bleaches. You will need to rinse it out a couple of times with tap water before you fill it with pure again.

[L.J.Thorpe]

lose weight
squeeze thru top opening
clean it out by hand
if you had a "racing snake" physique like me you could 
we did this earlier numpty

[*Mr Tumble]

I think KevR needs to respond to the last post, but in his absence I would say use quite a bit of caustic soda and rinse well.