Please Help

[raverfish]

Hi,
Could someone please advise me I have 2 goldfish a plec and guppies and mollies and neons and 2 gourmet fish I have recently been losing my guppies and a neon I have been finding them cocooned with fur like stuff... I recently brought a new tank and test regular for water elements can anybody advise me please I have 2 other tanks which are fine ...

 

[thereverendturtle]

what are the actual test results? Also gold fish shouldn't be mixed with any of the other fish you mentioned.