Yellow/Brown SPOTS on leaves?

Anyone have a clue what's causing this to happen?

looks like some kinda bug damage, check underside for real small buggers.

could u post more pics and preferably a whole plant one

that seems more like a ca/mg deficiency

zinc or calcium. are you using something with micronutes?

That looks similar to a spider mite problem I had once!

hughesresearch said:

zinc or calcium. are you using something with micronutes?

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I'm using Bio-Bizz Grow, watering every 2-3 days.

u need all the series of nutes , especially the algamic in ur case

bonjo78 said:

could u post more pics and preferably a whole plant one

that seems more like a ca/mg deficiency

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See attached pic of new plant (2 weeks from seed), same problem.
This plant gets only water (no nutrients or fertilizer).

bonjo78 said:

u need all the series of nutes , especially the algamic in ur case

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So, the Bio-Bizz Grow is not enough for vegetative growth?

it could be addequete if u were using the promix soil that comes along but i doubt

in sort words no , not all bottles contain all the essential micronutrients

thats deffinalty not food related. its a disease or bug

bonjo78 said:

it could be addequete if u were using the promix soil that comes along but i doubt

in sort words no , not all bottles contain all the essential micronutrients

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What would you suggest to add, BioBizz Alg-A-mic?

i sugest when using a brand use the entire series in biobizz u should be using bio grow, bloom +algamic , biogrow may have some P but it lacks the micronutrients that biobloom holds and visa versa , algamic is the main source of immobile elements such as Calcium and magnesium

Looks like thrips damage.

Its DEFINATELY a bug since the black spots are poo.

i was ready to say thrips my self , 3rd pic isnt a thrip damage , if it is a thrip tho we will know it in a few days