Pure psychedelic sativa 12/12 from seed 150W HPS grow

Water. Should have plenty calcium and magnesium. What conversion factor or foryour meter? .5 or. 7?

There's a few different conversion from EC to ppm, all of them are for converting to ppm of specific ions. I'm a fan of just using EC because there is no confusion over conversion issues.

ok, so my item conversion factor is 0.5
also i doubt that my water contains a lot calcium, since i've never seen lime collecting in my kettle.. but is it normal for tap water to have 300?

Water can have a fair amount of calcium and still be soft. So you have just under 0.60 EC tap water. In a soilless system like yours that will be fine. I'd suggest RO for hydroponics. The 0.5 scale is equivalent to ppm in a solution of table salt. You should have plenty of Ca and Mg though.

thank you guys for comments! great info. Here have a bite of this destroyer newly forming corn ))

and about that cal mag being plenty in the water, actually don't know how much of it are there, but after 3 weeks from seed i was already seeing mag deficiency.. but maybe those micros were locked out, dunno.. also did not know that calcium might be not only in lime form, was just assuming that because water after boiling did not leave lime, that calcium wasn't there hehe..

I use ro water so must always add cal-mag. Keep it on hand and when you get to mid flower boost cal mag K and sulfur til 2 weeks from chop. If you do you will be pleasantly impressed.

thank you man! nice tips. I'm still thinking where to get sulfur from. Maybe I should get epsom salt for that reason? Also K, difficult to find K that goes without insane amounts of P lol.. BTW that silica rocks hard as hell... plants make leaves tough shiny healthy green. Maybe I started applying that too late, cause stems are not that outstanding, but hey, only a week passed since I started using it, I should be more patient, nonetheless I already like it so much

Also those NPK values differs around here in EU, I can get into such a mess buying one product and getting totally different lol

Do you think that topviagra is any good supplying sulfur and extra K?


edit: i mean use that one as additive with my grow food

Some good P free sources of K, potassium nitrate (KNO3), potassium sulfate (K2SO4), potassium hydroxide (KOH, which is the hydrated version of K2O, be careful this is extremely caustic stuff), remember that your silica supplement (I can't remember if you're using protekt or some funny european equivalent) is potassium silicate.
One of these days I need to get my hands on some metal salts and start experimenting with my own nutes.

simisimis said:

thank you man! nice tips. I'm still thinking where to get sulfur from. Maybe I should get epsom salt for that reason? Also K, difficult to find K that goes without insane amounts of P lol.. BTW that silica rocks hard as hell... plants make leaves tough shiny healthy green. Maybe I started applying that too late, cause stems are not that outstanding, but hey, only a week passed since I started using it, I should be more patient, nonetheless I already like it so much

Also those NPK values differs around here in EU, I can get into such a mess buying one product and getting totally different lol

Do you think that topviagra is any good supplying sulfur and extra K?
View attachment 2725091

edit: i mean use that one as additive with my grow food

Click to expand...

jacksclassic acid special 14%,sulfur

I think a mix of MgSO4, CaNO3, KNO3, with a little bit of K(x)H(3-x)PO4 with chelated micros would work really well. You only need 5 metal salts to cover the big 6 (you'll need KOH and H3PO4 to make the potassium phosphate mixture).

man you're insane I wish I did not skip chemistry lessons, although it feels new to me, but not that difficult as it was in chemistry lessons long time ago

I am really unable to get jacks classics.. again, every time I ask internet for something you guys use I get that famous "sparta kick into the well" with a headline - "THIS IS EUROPE!!!"
about potasium silicate, well for me to buy protekt was a bit of a struggle, so I went for it's alternative. www.potsil.com actually this is not like a combination of micros and macros where other products compete, this is the same potassium silicate(K2SiO3) just instead of 11% concentration it's 33% so I just need to add less of it. But OH MY, both plants and all three tomatoes of mine showed strong healthy foliage with it. Cool.

I just ordered potassium sulphate and calcium nitrate Ca(No3)2 (whoa now that is some hipster paste lol) hm still thinking if I'd get potassium nitrate(KnO3) and monopotassium phospahte(KH2PO4) and perhaps epsom salts, maybe I could start doing some salt magic haha. hmmm, probably I need to read way more before getting into this salty world..

Look up Hoagland's solution, it's a good starting point for plant nutrient composition.

Nice, thank you, will have a look at it. Today noticed that all my salts will be delivered to uk, lol forgot to double check delivery address on ebay before ordering, so it went to the same place microkote was delivered before. Temps are rising outside.. Can't control it, so far plants do not look very much different, Zamal a bit less happy, Destroyer does not show any problems. Hopefully it won't last forever. Cause today after coming back from work temp was at 91F.

Zamal started making budsites, still at the early age, gosh she's slow, but she's getting there.
Kite you still plan on running zamal or will go for malawi?
Destroyer looks yummi.. leaves are covered with resin, colas are getting weight, the height is fully controlled, it has like 3 colas at one level, and 6 at 2 inches lower.

Zamaldelica:


Destroyer:

Ha, also recently got the message from biobizz,
--
Thank you for your interest in our products. To clear up the issue between Dutch and USA Biobizz products:

They are exactly the same products. But in the USA we must write direct available NPK’s on the bottle, but in Europe we must write the TOTAL available NPK’s. So the same products, but two different parameters for measuring the NPK’s.

We hope this answers your question,
--

EDIT:

so here are some conversion:
biogrow(NL) is 4-3-6 and biogrow(US) 3-0-8
biobloom(NL) is 2.0-7-4 and biobloom(US) 1-2-2

Destroyer is looking awesome. Good job training her! Zamal will do her thing in time.

I thought I was following a long, obviously not. Holy crap those look dead sexy.

aaahhh the heat is over, back to 66F outside, 77F at the tops of plants. A bit funny, while others are complaining of not having summer, I secretly giggle as every cold day give my plants a break.

Not too much of update today, since visual change is not very noticeable.
Destroyer started pushing resin on the bottom of fan leaves lol. Thats unusual for me, but reading description of the strain at seed banks website which states that it's extremely resinous, probably I could have expected this coming. The smell of it is a bit funny. Reminds me of my grandmas apartment old furniture.
Plants started to drink more.

Now some problems. This morning bottom fan leaves of destroyer(like 5 of them) were wilted and dropped on gentle touch. Strange, cause they did not pale, or showed any deficiencies, they were a bit damaged, cause they were touching the ground and when watered their tips were sticking to wet soil, but were fine all the time and in one night they just wilted, soil did not feel like really dried, it was about time to water the plant, however far from being too late as the weight of the pot was still a bit heavy. Here's the pic.


Zamaldelica looks alright on the whole, filling the empty spaces, packing some buds, but few days ago, her top fan leaves petioles became red/purple, top leaves almost all look alright, only one of the tops shows some light N excess, the rest of the shoots look alright, except for the purple petiole thing.
Here are more pics of Dest resinous fan leaves, plants and whole grow area.

I really want to run Destroyer.

The leave damage loos most likely due to getting wet with fertilizer solution. No worries IMO. I WANT TO RUN ZAMAL AND MALAWI!! Destroyer I will decide after sim's smoke report.