cross-posted from: https://slrpnk.net/post/17801651

Hey all,

I’ve been using my fertilizer now for a year, and it’s the only one I’ve used up until now, because I alway was satisfied with it, because it’s both very inexpensive and well formulated imo.

I’m using the Masterblend set, with the solutions pre-mixed for short term use.

I have mixed two “stock solution” bottles, which last me a few months in winter (only for houseplants and my small indoor grow tent) and a few weeks in summer (balcony gardening + house plants).

You can see the ingredients on the bottles on the picture:

They are always stored in complete darkness.

And then I have a diluted solution, with an EC of about 3-4 mS and a low pH, which I adapted to exactly match my tap water and houseplants when diluted to ~1/3. This pre-mix lasts me a few days maximum.

I’ve already noticed a few floaters in summer here and there, but didn’t mind them too much. They looked like small jellyfish or something floating around, but I thought that they might be some precipitation from minerals or whatever.

They got a bit more after some time, and a few weeks ago, I soaked everything in hot bleach water and mixed everything from scratch, because I already had the feeling that those might be amoebae or other microorganisms.

But now, everything is way worse. Just take a look:

Those specs are even in the normal nutrient solution!

A few of my plants have a reoccurring spring tail “infestation”. More like constant house mates.

I even got the chance to take a picture of them fucking. I feel like a pervert now...

No wonder they have such a good time. They’re probably feasting on those mold specs. They’re pretty much harmless and easy to manage, so I just don’t care as much.

Anyway… What I wanted to ask you: What shall I do? Desinfecting clearly doesn’t work.

The root cause seems to be the water. If I wouldn’t pre-dissolve everything, nothing would get moldy.

But of course, I need it to be in a liquid form for proper handling. Other fertilizer manufacturers are able to manage this too, so why can’t I?

Shall I add preservatives to the concentrate, like Isothiazolinones?

Or should I just switch to another fertilizer? If so, which one would you recommend, that is also cheap?

  • The_v@lemmy.worldEnglish
    13·
    2 days ago

    It is likely bacterial growth. The inoculum most likely is coming in the water source. Although bacterial growth is inhibited by water treatment, there is always some there. It could also just be floating around in the air on dust particles. These bacteria a tough and ubiquitous in nature.

    What likely happened - you had several competing species growing in the solution. Most were likely unicellular while this one likes to form a colony. It’s likely in the same group that forms the dreaded white films on the top on aquariums. When you sterilized eveything, you eliminated the competition and this species was able to grow larger and faster.

    So what to do - I personally would run it though a blender to break up the floaters before using it and otherwise ignore it. It doesn’t harm anything so why fight it?