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Wife and I are competing with hydroponic tomatoes. Mine are on the left, hers in the right. Both are fruiting.
(lemmy.world)
this post was submitted on 01 Sep 2026
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Fruits plants take so much nutrition. How often are you changing the resevoir, every 1 - 2 weeks?
You know...... the last time I changed the water was never >.> I've been putting it off because I think about buying a siphon and then immediately forget about it because, well, life distracts me.
So, I just bought one, just now lol. First time we've done this still.
I've tried this myself and researched a bunch at the time.
Most people suggest no more than 1 fruiting plant in a reservoir this size (and even several times larger) because what it will do is take the nutrients it needs and leave the ones it doesn't.
So say you have A B and C, fruiting plants need a lot of C. That means that A and B build up in the form of salts and can stop them taking up other nutrients.
So the only way to get them going to any real degree is frequent full changes, not just topping up.
All that said, you're experimenting and having fun and thats completely fine, just sharing what I've learned.
I did this 2 years ago, and this year ended up growing monstrous 2 metre tall vining varieties in 20L semi-kratky buckets.
Incredibly vigorous and impressive but tbh the water changes are still boring and the soil ones are far easier to maintain and doing 80% as well.
Still, a super fun project.
I want them to survive, and do well, so I am definitely going to start taking better care of the reservoir.
This whole planting thing has been fun. Also we will have things to plant during the winter, so we view that as a win too. And being able to take good care of them with regular water changes and nutrients will make it all the better