Fertilizing and TDS - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 08-26-2011, 03:42 PM Thread Starter
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Fertilizing and TDS

Before fertilizing (default macro ppspro) ive got 400 ppm and abouth month later its been stedily rising to 470 ppm. Is there connection between TDS and ferts? Does that mean that ferts are piling up without been used by plants (or at least not been used in amount ive been putting in)?
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post #2 of 7 (permalink) Old 08-26-2011, 04:34 PM
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EVERYTHING or almost everything added to a tank adds to the total TDS.
That's completely normal.

One of my primary indicators for a water change is a rise in TDS, I don't follow a strict WC schedule.
I set parameters, dose modified PPS and over time as the TDS changes (TDS alway's increases) I reset with a water change.

I consider that normal.

The only tank I have that doesn't show a TDS rise over time is not dosed at all.
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post #3 of 7 (permalink) Old 08-26-2011, 04:35 PM
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What do you top off your tank with? Tap or RO?


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post #4 of 7 (permalink) Old 08-26-2011, 05:48 PM Thread Starter
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Originally Posted by mattycakesclark View Post
What do you top off your tank with? Tap or RO?

With tap water, about 370 ppm
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post #5 of 7 (permalink) Old 08-26-2011, 05:54 PM Thread Starter
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Quote:
Originally Posted by wkndracer View Post
EVERYTHING or almost everything added to a tank adds to the total TDS.
That's completely normal.

One of my primary indicators for a water change is a rise in TDS, I don't follow a strict WC schedule.
I set parameters, dose modified PPS and over time as the TDS changes (TDS alway's increases) I reset with a water change.
Problem is that i dose really light ppspro dosage and tds still rises, so i wonder if the ferts are used at all. If the plants would use ferts, TDS would have level or drop, is it not? I dont dosage nothing except macro.
I have 2x50W of light , co2 and medium ammount of plants in 90g
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post #6 of 7 (permalink) Old 08-26-2011, 07:03 PM
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i hope this helps

https://www.plantedtank.net/forums/fe...ng-itself.html

DIY Trace/Micro/Macro Recipe
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post #7 of 7 (permalink) Old 08-27-2011, 10:07 AM Thread Starter
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Originally Posted by happi View Post
Missing variable in my tds rise is maybe gravel which consist of crushed granite and below that potting dirt. Granite had also some red dust, probaby residue after crushing. I washed it up , but couldnt clean it 100%
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