Hi everyone, the system has been running for 5 weeks now its a 1000 Ltr fish tank and 4 x 250 Ltr grow beds planted with seedlings of lettuce, bok choy, kohlrabi, celery, leeks and a lot of seeded plants such as peas which are 5" tall now with radish, beetroot, spinach, carrots, coriander and parsnips.  The weather here is quite cool water temp about 14c.  We started out with 15 goldfish and now…