The first treatment was added to my pools about six weeks ago and already I can perceive a definite improvement. I also added a hefty dose to my growing-on pond and the result was nothing short of miraculous, all the sludge having disappeared who knows where? Even the heavy ‘matting’ which usually coats the filter brushes appears to have reduced by about 50%, so I have high hopes that the amount of ‘sludge’ which has to be vacuumed out each week will also be reduced by a like amount. An initial colouring of the water quickly disappeared and is apparently quite normal.
J Cuvelier, Koi enthusiast