Hi thanks for your answers
ph is 7.5
Ammonia is 2.00 mg /litre pond is not heated though
nitrite is 01. - 0.25 mg / litre
nitrate is 15-20 mg litre
thats is after i had changed half the water in the pond so they would have been higher , dont think there to bad by the test results on the packaging .
think what annoys me more is having a pond that isnt heavy stocked thousands of pounds worth of filters to which i added new bacteria to all though the summer and still problems
thankyou for your help | 
