Question about Aquafarm controller unit

Artificial emotion

Well-Known Member
I'm planning on buying an Aquarm system. However, I wonder whether I can use the auto topup float valve that I'm currently using with my NFT setup in the Aquafarm by drilling a hole in the res so it can fit in instead of having to buy the Aquafarm controller unit, which I think does the same thing? Or would the Auto topup be too large to fit inside it?

So should I spend the £70-£80 on the Aquafarm controller unit or not? Can I use it on a single Aquafarm so I can leave it for 5 days when I go on holiday?
 
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