Root growth fertiliser

Chriss

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17 Nov 2019
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Good evening,
At a shop I was advised to use root growth fertiliser each time when I introduce new plant in a tank and then each month. I did water change every Saturday. Last Saturday I used tablets for a better roots growth but after 2 days I notice water became slightly cloudy what worries me. Is it normal after using tablets? Shall I stop using them? Also I dose plant feltilizer but at the same time I'm using a filter with carbon and I wander if the carbon isn't soaked by carbon leaving no nutrients to plants? Please, let know.
 

MJQMJQ

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Do u have an ammonia test kit?Cloudy water seems like bacteria bloom caused by ammonia spike.Are u using root tabs meant for aquarium plants?Aquarium ferts are supposed to supply nitrogen in form of nitrates and not ammonia.Also yes the carbon in the filter is considered chemical filtration as it also removes nutrients and such from the water.
 

MJQMJQ

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Good evening,
At a shop I was advised to use root growth fertiliser each time when I introduce new plant in a tank and then each month. I did water change every Saturday. Last Saturday I used tablets for a better roots growth but after 2 days I notice water became slightly cloudy what worries me. Is it normal after using tablets? Shall I stop using them? Also I dose plant feltilizer but at the same time I'm using a filter with carbon and I wander if the carbon isn't soaked by carbon leaving no nutrients to plants? Please, let know.
Also if u are not running co2 the root tabs should be used around once every 3 months even in a heavily planted tank.
 

Iain Sutherland

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Do u have an ammonia test kit?Cloudy water seems like bacteria bloom caused by ammonia spike.Are u using root tabs meant for aquarium plants?Aquarium ferts are supposed to supply nitrogen in form of nitrates and not ammonia.Also yes the carbon in the filter is considered chemical filtration as it also removes nutrients and such from the water.
Carbon acts a perfectly good filter media (unnecessary in most cases but perfectly good) and doesn't remove ferts to any discernable amount. Cloudy water isn't unusual in a start up, just change your water regularly for the first few weeks and I'm sure it will all come good

Sent from my SM-G950F using Tapatalk
 

MJQMJQ

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Carbon acts a perfectly good filter media (unnecessary in most cases but perfectly good) and doesn't remove ferts to any discernable amount. Cloudy water isn't unusual in a start up, just change your water regularly for the first few weeks and I'm sure it will all come good

Sent from my SM-G950F using Tapatalk
I thought the pores in carbon will also trap the nutrients?I could be wrong though because I dont use it.Also I was assuming it was a mature tank as he stated cloudy water occurred after adding the root tablets.
 

dw1305

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Hi all,
Carbon acts a perfectly good filter media (unnecessary in most cases but perfectly good) and doesn't remove ferts to any discernable amount.
I thought the pores in carbon will also trap the nutrients?
@Iain Sutherland is right, it can't really effectively sieve out ions, the nutrients you add are in the form of ions, and they are atom sized.

There are special cases when can use semi-permeable membranes to exclude larger ions (this is how a RO membrane or Ion Selective Electrode works), but other than that you have to use ion exchange and/or adsorption where ions (or atoms or molecules) from solution adhere to a surface of the adsorbent (which could be an activated carbon containing sponge)

cheers Darrel
 

MJQMJQ

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Hi all, @Iain Sutherland is right, it can't really effectively sieve out ions, the nutrients you add are in the form of ions, and they are atom sized.

There are special cases when can use semi-permeable membranes to exclude larger ions (this is how a RO membrane or Ion Selective Electrode works), but other than that you have to use ion exchange and/or adsorption where ions (or atoms or molecules) from solution adhere to a surface of the adsorbent (which could be an activated carbon containing sponge)

cheers Darrel
Ah i see thanks
 

JoshP12

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@Chriss what kind of root tab are you using? Some do leech ammonia or urea --> this may have caused the bacterial bloom. When I switched to a root-tab type fert in my substrate, I shot my ammonia in my "upgraded" (I increased tank size) tank to over 10ppm ... those were not good days ... but it gave rise to a great bacterial colony :).
 

Chriss

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17 Nov 2019
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Hello,
It all seems to come back to normal after 2 days.Water is crystal clear. The tablets are called simply plant root feltiliser. Thank you all for suggestion though. :)
 

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