Help please

I have white rhino plant about 5 weeks into 12/12 and older leaves are going yellow and looking burnt round the edges , also turning up quite a bit with purple stems and veins smaller leaves are now getting the yellow on Aswell so it's spreading and I don't know what to do


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There growing in soil in 6 gallon tub biobizz light soil and full nutrient from biobizz also . Been watering about every 5-7 days when it's light and dry , it's ready for next water now but scared of what to do plain water or feed don't want to make what ever worse


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Hey ec, your rhino's looking good I think. Its normal during the end of flower for lower leaves to turn yellow, just means your plants are nearing the end of their life cycle. If this was happening during veg or pre-flower, or if the top leaves were also turning yellow then you would likely have a nitrogen deficiency which would need fixed. However at this stage its normal, the plants are using all their resources to produce buds. On another note make sure you flush before harvest. Good luck

Yea, it is normal during flowering for leaves to turn yellow and droop. Purple stems are almost always a sign of some type of stress like temp fluctuations, Some growers have never had a grow where stems don't turn purple from the beginning to the end.

I am pretty sure that N def yellows fro the bottom up. I've never had the problem with a nitrogen def starting from the top. It has to do with the way the plant moves nutrients, but neva know.

Don't want to freak you out or nothing, but best guess (IMO) if there was a problem, would be a nute burn or lockout of some sort, but if you notice the leaves yellowing at the top are the older leaves, which yellow first!! Looks like a natural reaction!!

Your 5 weeks in, unless almost half or more leaves do this very quickly you should be fine. Otherwise look into changing something, water schedule, amount of nutes etc.

Yes I know what nitrogen def is but its more like burnt round the edges of old big fan leaves and cause I've lst so much I have a flat canape so old and new leaves are all near top but it's definitely moving over to some newer smaller leaves so I don't really know what's up with it . Week ago I flushed checked the run off it was fine at 6.5 so can't be lock out and I've been feeding the correct amount of each nutrient but some things up just can't figure it out I've lifted up my lights a bit now incaseit was heat stress . Other thing was I had a fan blowing at them could It I been the wind burning them do you think?


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Too much P/high P

I see that in biobizz a lot here....

Use the grow/veg formula for the first 2 weeks of bloom before you switch to the bloom nute.....Then mix the 2 50/50 for 2 weeks.....at the start of week 5 go to 100% bloom.......Try that next time......It should work.

Doc

its saying feed me real loud

I defo haven't over fed I've only given 1m grow 2 m bloom per litre at the max so can't see how I've given too much p. And if it wants more , more what exactly what is it looking like it needs