Arfie
Fish Herder
ANOTHER stupid question from me, get used to 'em!
I have an undergravel filter and want to try to mix the substrate with part gravel & part sand (keep the cory's happy).
Can an undergravel filter cope with sand as a substrate?
Or is there an equivalent for sand?
If sand was over a layer of gravel would this help?
Should I forget it?
Any other (constructive) advice
Cheers
Arfie
I have an undergravel filter and want to try to mix the substrate with part gravel & part sand (keep the cory's happy).
Can an undergravel filter cope with sand as a substrate?
Or is there an equivalent for sand?
If sand was over a layer of gravel would this help?
Should I forget it?
Any other (constructive) advice
Cheers
Arfie