Is it fair to ask him to pay more in the school holidays?

[LightningAndRainbows]

My DH and I have a joint account. Into which we pay an amount to cover everything for me, him, our shared DC and DSC this amount is split accordning to income. He pays maintenance out of "his" pot. Is it fair of me to ask him to shove an extra £50 in when the DSC are here for longer than their usual weekend? They are here for two weeks now and our food bill has shot up.

Perfectly reasonable to ask him to put in a extra £50- £100 to cover the 2 weeks they are there solid.

Thanks all. Yeah he's putting an extra £50 in no quibbles.