i can here you all scream, not again!!!

can some one clear this up for me please?

week 3ish epsom, 1ml grow 2ml bloom, when i give them the epsom do i put 1ml g 2ml b for the whole 5 litres or per lt as before?? now I'm confused!!


anyway, cheers.
deano.

Per litre as per ..........

cheers raz mate!! its been bugging me for a few days, didnt want to sound thick asking though!!

deano.

i thought the same mate, its not worded too well. it is just a guide tho, a little too much for my girls and i got a little nute burn. every plant and enviroment will effect the ideal dosage so see how you go, but listen to your girls! happy growing

hi
only give them epsom if they need it

Just to clear things up a little, at the time I gave Red Dragon advise he was using allmix compost, Biobizz had taken the production of their composts in-house about a year before! We were seeing member after member with Mg problems especially in the cold months of the year.

It was obvious that the new allmix of the time had more N and much less Mg than the allmix versions previously sold.

The time when cannabis uses very large amounts of Mg, is during the change into flowering mode and the early flowering period. If the compost being used by the plant is low in Mg reserves, the plant will start stripping Mg from the lower leaves to form the flowering parts. Any shortage from week 2 through to week 6 will reduce flower formation especially during the week 3 to 5 period.

Adding a heaped table spoon of epsom salts dissolved in 10 litres of feed at week 3 will do absolutely no harm whatsoever, even if the compost used has adequate Mg reserves! With the allmix of the time it made the difference between a mediocre crop and a good one.

The main thing is, not to keep adding Mg via epsom salts as it will lock out other nutrients if overdone, once the rootball/compost is damaged in this way, there is no way back. Quite a few members have overdone the epsom salts and suffered the consequences, then gone the other way saying only mist, don’t water them in.

I disagree! As with anything, all things in moderation. I always give some extra Mg with the feed round the 2 to 3 week flowering period, I do it in a slightly more complicated way the total dose being the same, in that I feed less per dose over 3 feeds, ie at a heaped teaspoon per 10 litres each feed, the total amount being the same as a heaped tablespoon in 10 litres in one feed, I find the plants are less stressed and do better for it, flowering more profusely..

thanks OT. i always wondered about that myself and have missed the epsoms out completely with the current grow (growing in JAB not allmix though) as a result of that confusion. seems that i'm getting exactly what you have described now, with the plants pinching MG from lower foliage. i think that (even though heavily seeded) the actual bud formation could have been better and it's probably down to the low levels of MG. i've seen such conflicting info about misting/watering/doses/etc but this is very clear and concise thanks again

ots the man!!! thanks very much, nice one lads!! you know when you just cant get your head round some thing!!

any way im at about 25 days 12/12, and i have got more yellowing leaves than im happy with, so with a bit of luck a nice dose of epsom might help perk the girls up!!!!

cheers again..
deano!!

Quick question to OT1 - hopefully he's listening....I haven't used epsoms since my first grow, and haven't had Mg deficienies that I've noticed. Am I right in thinking that the addition of rockdust, rootgrow and reasonably regular doses of seaweed extract enough to keep available Magnesium levels good in compost? I'm also giving them a little molasses every couple of weeks in my current grow - does that also provide Magnesium?

Cheers for any help,

SBP

Question or questions!

If you have not had problem why worry about it?

Molasses contains traces of Mg

Seaweed contains traces of Mg

Rock dust, contains a little of nearly all elements, it contains a little Mg but its not a major source.

None provide fertiliser levels of Mg even with combined use but will help a little.

Rock dust, molasses and seaweed stimulate whatever micro heard you have in your growing medium.

I hope this answers your questions.

To help explain, composts vary in their Mg reserves and availability.

So get to know the compost you use, if you see runout or inadequate Mg availability in early flowering, [yellowing starting between veins on lower leaves] your potential yield has already been reduced! This can quickly be corrected with a dose of epsom salts, this will not repair the damage done or the stress that the plant went through changing its metabolism to strip elements from its own leaves to try and complete its change of mode into flowering.

We force the change of mode into flowering in a way that does not happen in nature, for the plant to be able to do this change without any stress takes an adequate supply of all nutrients and trace elements, but especially Mg. Add that to the fact the plant is in a small pot, so has a very, very restricted root mass when compared to a plant in real soil.

While bio bizz grow and bloom liquid ferts have some Mg in them, when used to feed a plant that is potted in a compost that has inadequate reserves of Mg, the fertilisers don’t have enough to supply the plants as fast as it needs during the critical high use period either.

The thing I tell people all the time, is let your plants tell you, observation and I mean really looking, tells you if your plants are getting everything they need. If a plant is a little short of Mg the green tissue between the veins lightens very slightly, lower leaves, already the plant is in trouble but its very early, if it gets to light green much more trouble, as soon as there is the slightest tiny bit of yellow its serious.

Because it takes time to take in any problems at a glance, ie really looking for several grows and learning from it, I’ll stick with the advise to give a dose of epsom at the 2 to 3 week mark, because by the time you have yellowing leaves you have already fucked up by your inattention to the plants needs, a single dose will do no harm and act as a reserve for the rest of the flowering period.

Now if you use a compost you like but you do see Mg probs, next time you can supplement the compost, either by mixing in some dry epsom salts or dolomite lime or calcified seaweed before potting your plants.

excellent info OT1

Thank you OT1

Cheers OT1 - question(s) answered!

OT1, I am just about to pot up into final pots and I find with most strains that I grow in Bio-Biz all mix is they suffer some MG def early in flower.

Is it worth me mixing in some epsoms to the soil and then pot up or is there not much difference to adding it in liquid form when feeding?

Cheers
Psy

just wondering if you feed the whole 10 litres for one plant. sounds alot. only usually feed mine 2 litres of feed(biobizz 1ml grow, 2ml bloom per ltre)

I think it is better to give it as a liquid feed when the plant needs it, only my personal opion.


Its a dilution rate using standard measures, saying a tenth of a teaspoon or a tenth of a tablespoon per litre would just confuse things. How much you use per pot is down to the pot size and the amount of liquid it takes to saturate the compost type it holds!