How Do You Know What Your Floating Plants Need (minerals)?

Homeslice

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I've got some dwarf water lettuce. I have it floating in a small container, where I added tap water and Prime to dechlorinate, and have a couple minnows in there to provide plants with ammonia, nitrites and nitrates.

They seem to be doing OK, especially after I tried adding some iron.

But how do you know how much of what minerals to add, or what else the plants might need? I have no clue how much minerals, or what kinds, come in the tap water.

Thanks!
 

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Plant nutrition - Wikipedia

This Wikipedia article lists both macros and micros and talks about them.

Info Before You Buy Flourish And Ferts In General

In this post I talk about aquarium fertilizers and what they contain.

Tap water usually doesn’t have much of anything, maybe it’ll have adequate calcium and magnesium if your water is naturally hard .
 
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Homeslice

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-Mak- said:
Plant nutrition - Wikipedia

This Wikipedia article lists both macros and micros and talks about them.

Info Before You Buy Flourish And Ferts In General

In this post I talk about aquarium fertilizers and what they contain.

Tap water usually doesn’t have much of anything, maybe it’ll have adequate calcium and magnesium if your water is naturally hard .

Thanks you Mak - I think your very last line might have directly answered my question - that, for purposes of determining what I might add to the water, I am best to assume that the water currently has NO minerals. I guess, if there is some calcium and magnesium in there, it won't be too bad for plants/fish/snails/etc.? Thanks
 

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Homeslice said:
Thanks you Mak - I think your very last line might have directly answered my question - that, for purposes of determining what I might add to the water, I am best to assume that the water currently has NO minerals. I guess, if there is some calcium and magnesium in there, it won't be too bad for plants/fish/snails/etc.? Thanks
You might be able to pull up some local water reports, but a GH/KH test kit will tell you for sure what the water that goes into your house is like.

It doesn't hurt anything living no, unless you have fish that absolutely must have soft water. The only issue is it doesn't contain adequate amounts of the 14+ nutrients plants need
 
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Homeslice

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Thanks Mak! A GH/KH test kit look like just a general test - there are no cheap and easy tests to tell how much of the each of the 14+ needed minerals are in one's water? Thanks!
 

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Homeslice said:
Thanks Mak! A GH/KH test kit look like just a general test - there are no cheap and easy tests to tell how much of the each of the 14+ needed minerals are in one's water? Thanks!
There are for some of them, though I don't really think they're needed. Better to dose a little more than needed that to risk deficiency and weakened plants, which welcomes algae.
 
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Homeslice

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Understood Mak, makes perfect sense. Thanks!
 

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