Banana Wine - need some advice plz

[Coolguy]

I'm making my second batch of banana wine...

Batch-1
came out dry...and less flavor...but i liked it...i finished it without racking it as soon as primary completed....

Batch-2
around 4 lbs of banana using...
Primary fermentation going great (that's what I believe)

Experts
Plz clarify

do i need to add Campden tablets for sure ?
when should i need to add this tablets ?
how much should i add per gallon ?
any substitue available ?

 

[dralarms]

Campden tabs are just a preservative. You add them after completion. If you are back sweetening you need potassium sorbate