The Official Canna Coco & Nutrients Thread

Depends if you need it or not. What ppm does your water start with? You want at least 60 ppm in your tap. If your doesn't have enough add 5 - 10mls.
Even then I would see if your plants require the Calmag. I've found that unless needed, the calmag is usually good enough in the base A & B. and adding more tends to lock out which becomes the slippery slope.
just my two cents. Lates.
 
What water are you using Mica? I use tap water and my EC is 0.3 before nutes. I ended up having to use 1ml/gal of CalMg+ by week 5 of flower because they started showing signs of calcium deficiency. My PH is always bang on at 5.8 so I knew it wasn't a nute lockout issue.
 
i use tap water as well. dont know how to check EC. but after all nutes my ph is about 7.0 and i add some ph down to get it to 6.5. is that still to high?? i can get it lower if i need.......
 
micadesgns said:
i use tap water as well. dont know how to check EC. but after all nutes my ph is about 7.0 and i add some ph down to get it to 6.5. is that still to high?? i can get it lower if i need.......
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You need an EC meter to check your EC/ppm ;)

If you're growing in coco, that's way too high of a pH. Optimal pH for coco is 5.8.
 
micadesgns said:
also, i've been useing 1 teaspoon calmag per gallon and i think that converts to 5 ml. is that to much??
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Since you're using tap water that probably is too much. Get your pH down to 5.8 and use about 1-2ml/gal of CalMg. Having your pH too high induces nute lockout.
 
ok guys, me again. I'm worrying now. When i sratrted i was watering once a week. I'm in 3 gallon airpots. Then every third day pots were so light i started watering then. now, 3 weeks into flower pots are light and plants asking for water every other day. Is that possible?? i dont want to rot the roots. and can you give nutes every other day?? i use nutes every watering. First time Coco grower so is this normal????
 
micadesgns said:
ok guys, me again. I'm worrying now. When i sratrted i was watering once a week. I'm in 3 gallon airpots. Then every third day pots were so light i started watering then. now, 3 weeks into flower pots are light and plants asking for water every other day. Is that possible?? i dont want to rot the roots. and can you give nutes every other day?? i use nutes every watering. First time Coco grower so is this normal????
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Normal - water as needed - use nutrients every time.

PH to 5.8 exactly (your wayyyyyy to high)

Whats the PPM of your tap water? If it's 250 or more you may not need any... then again the problem with tap is you have no idea what the 250ppm is comprised of, could be all useless junk.

5ml a gal of Cal/Mg way to much with tap water. Try 1 or 2 ml a gal like B said
 
Check your town's water supply website (most have one) and you can check the last analysis of your water to see what's exactly in it and how much of each element.
 
EvlMunkee said:
Sounds normal. They need a lot of water now. Don't let the coco get dry
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Actually, CANNA recommends keeping the medium a bit dry. The following excerpt is taken from canna's member only section, I highly suggest signing up and reading every peice of literature they have available. It really helped me in my garden:

"Coco retains an enormous buffer of water and nutrients. It is recommended that the grower keep the medium a bit dry rather than soaking wet. Wet circumstances form an ideal basis for fungal diseases like Pythium. A drier substrate passes more air through to the roots stimulating them to absorb water and nutrients more actively. This results in a faster growth and higher yields.

Another important instrument is timing. Once the Coco has become too wet, reduce or pause watering until the Coco has dried out and then start normal watering again. Check the moisture content of the Coco by hand or by determining its weight by lifting the pot or slab. A rule of thumb for watering fully-grown plants is 4 to 6 litres per m2 a day. By decreasing the dripping frequency and by increasing the amount of nutrients per watering, the best use is made of available water and nutrients. This will also improve drainage. The frequency of watering depends on the evaporation and the water supply in the Coco. A common rule is that one daily watering is sufficient during the first few weeks under normal circumstances; then increase up to 2 times a day; 2 hours after the lamps have been turned on and 2 hours before they are switched off again.

Please keep in mind, smaller root volumes per plant (small pots or many plants per slab) will make Coco dry out quickly. Therefore it is critical to water these plants more often."
 
My rule of thumb is to stick my finger 2 inches deep into the coco. If it's dry there (not damp), then it's time to water (if you do the pot lifting method, you'll find these 2 techniques coincide with one another). Keep in mind, I hand water/feed my plants until there is about 10% run off (in 5 gal air pots). For me it works out to every 5 days between watering/feedings.

The post above is referring to a drip system.
 
Any advice is helpful. I grow in Cana coco with cana A and B. I got some in flower right now and they are staying wet and pot heavy way to long. Its been 6 days today and they still feel heavy. I feed nutes every watering A B and floralicious plus. And my temps are from 66F to 78F. Anyone ever experience anything simular? And some are on day 38 and some are on day 24.
 
rfun said:
Any advice is helpful. I grow in Cana coco with cana A and B. I got some in flower right now and they are staying wet and pot heavy way to long. Its been 6 days today and they still feel heavy. I feed nutes every watering A B and floralicious plus. And my temps are from 66F to 78F. Anyone ever experience anything simular? And some are on day 38 and some are on day 24.
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You got an inch or 2 of hydroton in bottom of your pots? If not you should and this may be your problem. The Hydroton provides proper drainage for the coco
 
Nah I've never used Hydroton at the bottoms. But its kinda to late for that now isnt it? Would I hurt the plants any if I take them out the pots and add the Hydroton now, at 39 days in?
 
rfun said:
Nah I've never used Hydroton at the bottoms. But its kinda to late for that now isnt it? Would I hurt the plants any if I take them out the pots and add the Hydroton now, at 39 days in?
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LOL - yes you missed the boat on that one. You could try using a little less water on feed days. Use 1 or 2" of hydroton at the bottom next time. (RINSE IT WELL FIRST, GET OUT ALL THE RED DUST)
 
I never use anything in the bottom. And I have massive roots. 3.5 gal pots and water everyday after two weeks of xplant. Sounds like your watering too much early on which drowns the roots and keeps them premature. They can't use the water they should be. I would say higher temp and humidity and wait till 50% light to water again. Just my two cents.
 
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