Ok ladies I've had a reply from SMA and it say that the feed size is the total reconstituted amount - so basically 7oz water + 7 scoops = 8oz.
Here is what the email says:
Dear Anna,
You are adding 7 scoops of feed to 7 fl oz of water, so the total volume reconstituted will be more than 7 fl oz. The total fluid level increases due to the addition of the powder. Historically people will talk about the number of scoops used being the feed size, however the true feed size will be the final reconstituted volume.
I hope you find this information suitable for your needs but should you have any further questions please feel free to contact the SMA Careline again.
Kind regards,
Michelle Kerry
Careline Advisor
Well that's clear! My lo is doing really well then - but unfortunately that means my OH was right!
Thanks for finding that out. I had also emailled C&G so it will be interesting to see if their answer is the same...
Jx
I was thinking of emailing the other brands - hipp have live chat so might see what they say xx