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[USER=12065]@Roth[/USER] Xavier, I do believe you are right good sir.

I purchased a new PH test kit from General Hydroponics Link which appears to be more accurate as it indicated my solutions have been right around 5 instead of 6-6.5 as my PH pen and strips were saying. I have JUST started to adjust the PH to around 6.5 and this along with a thorough monthly flush seems to be reversing the yellowing slowly. I suppose this is a lesson to never assume the one or two tools you have on hand will be accurate.

I should have stated that ALL of my plants are overly yellow (see the image of a full tray) when compared to when I first got them or when looking at other references online; some just developed brown specs on the underside over time.

Will see if adjusting the PH up will stop the speckling from advancing further into new leaves but moreover hopefully it reverses the yellowing, and widespread stunting I'm encountering.

[ATTACH=full]44690[/ATTACH]

<blockquote data-quote="Russ1992" data-source="post: 761385" data-attributes="member: 144515">[USER=12065]@Roth[/USER] Xavier, I do believe you are right good sir. I purchased a new PH test kit from General Hydroponics <a href="https://www.amazon.com/General-Hydroponics-Test-Kit-1-Ounce/dp/B000BT32UA?th=1" target="_blank">Link</a> which appears to be more accurate as it indicated my solutions have been right around 5 instead of 6-6.5 as my PH pen and strips were saying. I have JUST started to adjust the PH to around 6.5 and this along with a thorough monthly flush seems to be reversing the yellowing slowly. I suppose this is a lesson to never assume the one or two tools you have on hand will be accurate. I should have stated that ALL of my plants are overly yellow (see the image of a full tray) when compared to when I first got them or when looking at other references online; some just developed brown specs on the underside over time. Will see if adjusting the PH up will stop the speckling from advancing further into new leaves but moreover hopefully it reverses the yellowing, and widespread stunting I&#039;m encountering.[ATTACH=full]44690[/ATTACH]</blockquote>

[QUOTE="Russ1992, post: 761385, member: 144515"] [USER=12065]@Roth[/USER] Xavier, I do believe you are right good sir. I purchased a new PH test kit from General Hydroponics [URL='https://www.amazon.com/General-Hydroponics-Test-Kit-1-Ounce/dp/B000BT32UA?th=1'][COLOR=rgb(41, 105, 176)]Link[/COLOR][/URL] which appears to be more accurate as it indicated my solutions have been right around 5 instead of 6-6.5 as my PH pen and strips were saying. I have JUST started to adjust the PH to around 6.5 and this along with a thorough monthly flush seems to be reversing the yellowing slowly. I suppose this is a lesson to never assume the one or two tools you have on hand will be accurate. I should have stated that ALL of my plants are overly yellow (see the image of a full tray) when compared to when I first got them or when looking at other references online; some just developed brown specs on the underside over time. Will see if adjusting the PH up will stop the speckling from advancing further into new leaves but moreover hopefully it reverses the yellowing, and widespread stunting I'm encountering. [ATTACH type="full"]44690[/ATTACH] [/QUOTE]

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