Dutch Passion auto ultimate with seymour

I've been wanting to grow out the photo version, now the auto as well. I'd put money on its a AK-47 cross, so who knows maybe AK x Skunk?
 
day 30

and then their was 1...

as of today ive flipped the remaining auto ultimate over to bloom feed and dropped her nitrogen, im also still using potassium silicate and have now also added 6ml of carbo-load into her res, her current ec is 2.0 with a ph of 5.8 although she still looks a little pale to me and could probably handle more feed maybe im just being particular but im gonna monitor her for the next couple of days and get a feel for what her res readings are and also which direction her ph swings and adjust accordingly but she has been really stable this far

I did read somewhere that the ultimate can handle stronger ec's so it may well be the case that im slightly under feeding her

her aroma has changed from citrus/lemon skunky to a more sweeter/floral fragrance, watching your plants change shape as they grow is pretty awesome but also noticing the aroma changes is just as exciting

grow room temps are around 76

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Hey SB, just wanted to share my experience with you since you often switch nutes around.

On my AWW&TD, using all canna range except Carboload and Cal Mag, when introducing carboload to a big rez mix, EC would drop slowly during the week. Like from 1.8 down to 1.4. No bubbling, but a 500lph powerhead fluming an 80L rez, so even "cleaner" than bubbles. The mix became slightly cloudy and a few days later I was all frustrated fixing what is always rock solid on the mark. Btw, this is using coco nutes and hand fed, so the rez was just sitting tight. Never had this before, maybe a bad batch of the carboload?

The walls of the rez, pump and EC/ph probes started getting a thing layer of crystal formation after a few weeks after introducing itm that was very very very tought to scrub off. It seems the carboload reacted with the salts and percipitated them... well, not really precipitate... agglomerate? lol... Anyway, pH would also skew off mark slowly

Anyway, switched to Boost Accelerator and it saved my crop. The plant burst into production. Almost like if Carboload even slowed her down... yeah, probably a bad batch... But anyway, I too was mixing a strong feed, but the plants were not looking like they were taking it all in. Also a slight clawing while slightly on the pale side.

Just FYI in case you suspect something is off. Next bucket change, I suggest keeping a bit of the mix in a jar off somewhere and test the pH and EC every few days, just to be double sure.

I'm also running a high EC on my AU. Slight tip burn a few days back, but pulled back a notch and they're happy. Was wondering about how hot you like your cal mag and silicon? My base water is ec-0.25, then I "ammend" by adding 0.5ml/L cal mag and 0.5ml/L silicon. This brings me around a total base ec of 0.5-0.6, then I mix up the "food" part - Currently, day 21, EC 1.6-1.7 (base + 1.1 - 1.2). I'll leave cal mag where it is, seems to do the trick every time. But I could increase silicon for enhanced performance.

I was thinking of upp'ing the silicon to around 1ml/L, but doing RDWC I don't know how they will react, and mixing up 75L at a time can be quite costly. Never gone beyond 1ml.

What do you think is a good silicon regime?
 
hey groff

not to sure what coco nutrients have to do with dwc which is a whole other topic in itself.......

ive never had a problem using canna vega in dwc with added carbo-load as this is a combo I used to grow my think different plant with the only problem I had with canna was I always got cal/mag deficient plants so I had to use a supplement

canna nutrients can produce great plants but they do take some tweaking to get the best results using l.e.d lights which is why I now use genesis

if I was running canna aqua I would add 8ml of cal/mag to my res 1st then use the other nutrients to achieve my desired ec as for potassium silicate I would start on 6ml per res as seedlings and up this to 8ml per res on day 14, id only use silicon until they are half way through pre-flower stretch so the silicon hash ad the effect of building a strong frame to hold some massive flowers

ill have a read through your grow and maybe throw you some ideas

seymour
 
Seems just about what I've been doing. I think I may try a little extra potassium silicate if my plants recover from a recent spin-off. About carboload, just saying! I used it before with success too, but maybe summer heat, late shelf life, dunno... I think it went off and funked my mixes.

:smokebuds:
 
and get a feel for what her res readings are and also which direction her ph swings and adjust accordingly but she has been really stable this far

Could you explain what makes the pH swing either way? I understand the EC - Higher = excess food remains - EC Lower - shes hungry - EC the same just right.

But is the pH swing on the subject of anions/cations being unused via the root system?

What would you do to avoid it going one way or the other?
 
Could you explain what makes the pH swing either way? I understand the EC - Higher = excess food remains - EC Lower - shes hungry - EC the same just right.

But is the pH swing on the subject of anions/cations being unused via the root system?

What would you do to avoid it going one way or the other?

ph is is just a reading of acidity, if the ph swings it just shows signs of your root systems activity

ill give you an example

ph going up

if ph is rising this is a good sign as it means your plants are drinking and eating so this gives you scope to tailor your feed to try and find her sweet spot and breaking point

ph going down

if the ph is going down this is a good sign your plants are excreting through their roots which could be caused by overfert or change in growth stage, also if the plants are excreting you will notice the ec increase as she exerts waste she doesn't need ready for her next phase of her lifecycle or recovering from poor grower ability

when the ph is stable your pretty much golden as their is great balance in your res

when you start looking into the activities of root functioning in relation to ph balance you can learn all kinds of stuff but I always start with a ph perfect res for a true reading from the plant
 
Spot on SB thanks for the knowledge and your AutoUltimate is a thing of beauty!!!
 
That's so kool seymour - tailoring the needs of the plant only once she asks and shows signs - not guessing and messing up.

I suppose is this one of the main advantages of DWC ? The ability to track EC and monitor the way shes feeding etc or is this achievable in soil - When testing the runoff with PPM it shows unreadable but i suppose this is due to the soil particles in the water - i wonder if straining the run off through a fine sieve or mesh cloth would give a true soil EC/PPM level
 
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