Hi, I'm not an expert but I think if it froths up at all then you can't use it for cycling. I began cycling with fish food but the smell of the rotting food took over my living room, so in the end I advertised on the buy sell and swap part of the forums for any Ammonia that anyone had left over from their cycle and got a bottle for £2 including p&p.
Good luck with the cycling
Aylana