DIY Water Filter Activated Charcoal

[Nemesis]

Well a bit of an update The flow rate is quite slow, ok for few people but not really good for a group, I know that the slower the rate the more crap is caught but I need to turn this up a notch, I think maybe remove either the blue fine sponge or the top black charcoal filter.

Also it seems 20/30 gallons is the cut off point for the filters let’s just says 100 litres, this is still unconfirmed so any help here would be welcomed.