Leaves are yellowing - Please advise

[OzbudboY]

This is my 25 day old diesel seedling that i topped/fimmed 3 days ago. Is it possible the yellowing is from me pinching this off with my fingers? Hopefully you can see the yellowing starting around the edges

 

[Curly Beaver]

I'm no expert but I'm gonna go with a Mag deficiency as I was there a few months ago. I don't think topping would have anything to do with it.

More pics from the top would help.

 

[Rifleman]

Anytime you are growing hydro you should aim for a ph of 5.8. Otherwise you will have a nutrient imbalance. Check your reservoir ph and use the charts I've left you. I bet you can find the fix quickly. If not, let us know some details about your grow, and I'll try to help more.

 

[OzbudboY]

Oh wow, thankyou rifleman.

 

[OzbudboY]

I'm no expert but I'm gonna go with a Mag deficiency as I was there a few months ago. I don't think topping would have anything to do with it.

More pics from the top would help.

Wait for more experienced growers to chime in, but I'm gonna guess they'll tell you Epsom Salts, 1 teaspoonful per gallon, worked within 24 hours on mine, now I use CalMag EVERY time I water anything.



I have been using calmag. I added a dose of calmag half strength. All nutes were half strength. Maybe they all need to be full strength?

 

[Curly Beaver]

Excellent, I didn't know that.

Good luck.

 

[OzbudboY]

So according to the beautiful colored graphs above, unless your pH is at 5.8 you are going to miss out on getting either calcium or magnesium. Thats going to be tough to maintain, i guess i need a bigger reservoir.

 

[Rifleman]

So according to the beautiful colored graphs above, unless your pH is at 5.8 you are going to miss out on getting either calcium or magnesium. Thats going to be tough to maintain, i guess i need a bigger reservoir.

I do it in single five gallon buckets. It does get tiring. Grab you some AN Sensical if you can, or some other calmag that is 0-0-0 in the nutrients. It'll help avoid the def, and get the ph monkey to at least take a smoke break even if it doesn't get off your back totally.

 

[OzbudboY]

I want to continue to use the 5 gallon buckets also, recirculating from a larger tank should help keep the ph stable i believe i read somewhere

 

[Emilya Green]

for best results, let your hydro pH drift between 5.8 - 6.1 and that way you go through the entire range and pick up all the nutrients that are available in the mix.

 

[Rifleman]

Exactly what I set my buckets up to do tonight Emilya. I didn't bother to detail it, but my last entry was a ph check and adjustment to 6.**, as I know at this stage it is drifting down. It's easy to get a hang of Oz. Run over and read some of the hydro journals in the completed journals section. Or have a look through my current one. I'm fairly detailed. If you run into any other problems feel free to ask.

 

[OzbudboY]

Thanks again rifleman, turns out my ph was at 6.2. and 660 ppm, now its at pH 5.7 and 1540 ppm

 

[OzbudboY]

Pics from the top

 

[OzbudboY]

 

[Emilya Green]

check your pH... it is most likely too high. This is a non-mobile nutrient deficiency showing up in the very newest growth as it is. One of the micronutrients is being locked out. Here is a chart.

Suspect either sulphur, boron, copper, manganese or zinc