Quantity brewing - the maths and what can you use?

[Guest guest]

After my first few weeks brewing I have finally realised why I never have any

kombucha to drink. I havent enough sizeable containers deemed suitable for

brewing! I have a couple of 1.5 litre pyrex bowls going, no wonder I am running

out.

minimum 2 x 600ml per person per day 1200ml x 7

I really need to be making a minimum of 10 litres a week to include 10% liqueur

to put back with the mother.

So two questions, can I use plastic wine fermenting kit safely?

Several sources say no, several say thats what they use.

If I find a suitable 10 litre container, what sort of weight/size scoby is going

to be needed to cope with that volume?