Nutrient def.

Roediger

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15 Jan 2017
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PA
Hello everyone! Been a while since i bothered you lol. I got a hygrophilia plant. Its growing but i started to notice many pin holes. I just give it the K that comes in potassium nitrate only. Its 29 gal 306 fluval filter. Do EI dosing accordingng to Rotala butterfly. My ludwigia red also have a hard time. Instead of using a diffuser i switched to inline reactor to t3st my luck. Thank you
IMG_20201021_222450.jpg
 

rebel

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4 Aug 2015
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If CO2 doesn't work (wait for one month to see whether the new leaves have this issue), then need to add some PO4 and observe for another month.
 

Zeus.

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1 Oct 2016
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If using CO2 the most likely cause is a CO2, due to fluctuating CO2 levels during the first 4 to 5 hours of the photoperiod. Doing a pH profile will Help identify the issue and help resolve it too. Getting a stable [CO2] for first 4 to 5 hours of the photoperiod is the hardest part of using CO2
 

Roediger

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15 Jan 2017
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Its 7.4 and within the hr its 6.4 and usually hangs there. Maybe goes 6.6 till lights off. I git a 304 fluval. Flow usually slows at the bottom half. Going to the filter
 

Roediger

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15 Jan 2017
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PA
I got an api kit idk how well that is. Ph pen i tried the dam thing was a problem even got ph 7 calibration... Is it worth buying ph controller
 

Zeus.

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Is it worth buying ph controller

IMO - NO - pH fluctuates with pH controllers

Cheap pH pen - IMO calibration is irrelevant as the actual pH is also irrelevant, its just a stable pH we are interested in, so the reading on the meter/pen isn't important, the DC tells you a approx [CO2] two hours ago and if the pH hasn't changed in that time and your happy with the [CO2] , then if pH hasn't changed from lights on for 5hours happy days
 
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