jaidexl

My macro solution has brown, cottony fungus type bits floating in it after about a month. I used RO/DI, it's in a white bottle under the cabinet.

Should I toss it?

freydo

is your cabinet enclosed? if not, then ambient lighting is getting to it, which is probably causing the fungas.

supersmirky

It's why I tend to use a dark bottle such as hydrogen peroxide to store mine in.

jaidexl

It's a 500ml solid white bottle in an enclosed cabinet. I tossed it.

Seattle_Aquarist

Hi jaidexl,

I had a problem with fungus in my ferts as well, my trace mix was the most susceptible. Now I try to mix up no more than I can use up in about two weeks. I also changed to distilled water instead of tap water and I add a few drops of fungus medication to the mix.

jaidexl

I used RO/DI and only get a few weeks of use out of it before noticing the issue.

I guess I'll try keeping it in the fridge next time.

I never got around to making the trace mix, waiting for a particular bottle to become empty, still dry dosing micros till then.

kimcadmus

For Macros I'm using 500m peroxide bottle refrigerated.
For Micros I'm dosing dry now (following the fungus issue even with RO and refrigeration)

It is working beautifully.

jaidexl

Maybe I should just continue the dry micros then, it's easy enough to do anyway. Makes sense to do the work of mixing all the macros for an easier regime (disclaimer: easier for some of us), but it sounds like it was all in vein for those that got fungus in their trace. I'm betting my luck will give me fungus in my micros as well.

kimcadmus

My thought exactly. Though I am no expert.