At risk of being flamed, I say go for it. I understand it is not the kindest most loving thing to do for your fish- but I don't think it would be that bad.
If fish can go 1 week with nothing, I think fish would be able to go two weeks on a vegetarian diet with little or no problems - if they are individually confirmed to eat the plants present in the aquarium.
It would be an interesting experiment. It might fix the diatom problem (diatoms can be caused by excess nutrients - right?). He also might find that he (or others of us) can go on 2 week vacations without having to worry.
If fish can go 1 week with nothing, I think fish would be able to go two weeks on a vegetarian diet with little or no problems - if they are individually confirmed to eat the plants present in the aquarium.
It would be an interesting experiment. It might fix the diatom problem (diatoms can be caused by excess nutrients - right?). He also might find that he (or others of us) can go on 2 week vacations without having to worry.