Nikki wrote:
something i noticed was if i put them in at night (they are the ones you get
at the petstore in the fishfood container) they have fungus on them by
morning, and another thing that i have never seen before that i am seeing
now is even the flake food i feed the guppies has fungus on it, i dont feed
them a lot so there is not a lot of it but last night i feed them flakes and
i notices a couple flakes in the morning at the bottom and they had white
stuff on them, and before now i never seen that. i got it out with the net,
it was only like 2-9 pieces but that is strange i wonder if it has something
to do with the blood worms or the fungus from the fish...
Nikki

It's nothing to do with the bloodworms. You are overfeeding and your
tank has some water quality problems that are favoring the growth of
fungus on everything. I know you're an experienced fishkeeper and you
think you're not feeding a lot, but I think you're overestimating the
amount of food guppies can eat. My guppies never leave food overnight!
Properly fed, healthy guppies are always picking at the gravel,
plants and decorations hunting for food and they rarely miss anything.

You said you took your water to LFS to test it. What, exactly, is fine
to your fish store? Did they tell you the numbers or show you the test
results? You cannot adequately monitor increasing nitrates and falling
pH (what I bet is happening in your guppy tank) without testing.

I still think you need to start changing about a third of the water a
day and really cleaning the gravel for the next week or so. Also put
fresh, high-quality carbon in your filter to help the water quality.

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