Possible magnesium deficiency

[chuck1718]

Well here it is day 41 Auto Assassin strain super soil mix temps about 75 days night times normally 70 last two night was like 50's though indoors. Only been giving water ph is about 6.7 6.8.

 

[DarthMaul]

Are you feeding Cal/Mag? A little molasses could help as well. 1 tsp per gallon

 

[namvet25]

Could be the start of cal/mag def and a start of nitrogen def.

 

[Waira]

Chuck-- ...cooler temps that low start to really effect uptake of many nutrients, granted it's only temporary, but can be enough to trigger symptoms,... the lowers look like typical Mg defc., maybe a little Ca (spotting) too... the uppers though, look pale too.. my thinking is Fe defc., which can be cool temp. sensitive (so is P,..do I see some purple forming on a few uppers?-- a possible sign,..)... Fe moves very slowly in the plant as is, so a little cool and/or low levels may tip the defc. scales; Fe gets rapidly locked outin neutral to alkaline pH, so dial your water/nutes down to 6.5-ish,... Treat with a dedicated Ca-Mg product, and one that has micronute's (Fe-Mn-Zn-Cu,.. often paired up together)... Botanicare Cal-Mag is great all-in-one product; molasses can help too (1tsp/qt)-- has Ca, Mg, little Fe,... though not as concentrated as the dedicated supp's... if it stays cool like this, fixing the defc. may be more difficult/slow....