One for Eejay

[Country joe]

Dr Tim's Aquatics.
Waste Away Time Release Gel.

 

[Essjay]

I've never used this product, nor any similar product, so I can't comment on if they are useful.

However, bacteria grow naturally in the substrate which help beak down waste so I suspect it's yet another product which isn't actually needed in a properly maintained tank.

 

[Country joe]

Yes I thought another wonder product I won't be buying.