Hey guys!

I am about 3.5 weeks into my first grow. I've got 8 Spice of Life Adventure mix babies, 5 of Master Thai's Heavenly (c99 x Romulan) and 4 of Brownpants's Very Berry Surprise x Bubblegum. The day before yesterday some of my plants started to get sick, so instead of my usual feeding last night, I flushed them. Today they look like hell, so I am not too sure what's going on..

Here's my specs first off. Plants are in 2 parts canna coco to 1 part coarse perlite. I have half of them in square 1/2 gallon pots and the other half in 1 gallon pots. I have been watering once nightly to runoff in the 15% range. I have been feeding them the following per liter, 1 ml each of Canna A and B, 1.5-2 ml of Rhizo and in the last 10 days 2 ml of Canna zym. I normally mix about 8 litres of nutes each night, so 8 ml of A and B, 15 ml or so of Rhizo and 15-20 ml of Canna zym. I PH to 6.0-6.2. I do not check my EC currently as my EC meter got submarine'd and has not been replaced, I have been feeding at this strength for almost 2 weeks now. I mix nutes with my tap water which has a PPM of about 80 from the tap. I foilar feed once a day usually when I am watering with a very mild liquid karma spray. I suspected that my PH meter was not working at first, so I cleaned the electrode, calibrated and put in fresh batteries. I water with just Cannazym once a week to a little more run off than normal just to clear out any built up salts.

About 3 nights ago I moved all the plants from my veg area which is about 400W of mixed spectrum flouro's, to my late veg/flower cabinet which is a 600W hps. Temps in both areas have been 76-80 F and the RH varies from 45-55%. Problems started after the move, the HPS was kept at least 30" from plant tops.

Here are some pics courtesy of my lovely wife:







I am really impressed overall with the coco so far, it is an amazing growing medium. If anyone has any advice on this please get back to me, thanks guys!

Well to me they look; over watered, and underfed.

I've never grown in any thing but Coco, but the PH levels are vital..
And I stand to be corrected, by those with more experience.

check out the Canna web site.

Peace an stuff.

[Dalton]

Hey supernuck, I think the foliar spray might be your problem. are you spraying during lights on..under the 600 watt bulb?

[-VT-]

Those plants look burned and locked out to me....I'd PH flush 2x a day for a day or two ...I did for two days when I burned my plants in my current grow...and it saved most of my plants....almost lost my GDP


good luck

[Ono Nadagin]

I would say fix your meter 1st and then the problem should fix itself after a flush of just pH'd water.... after a day or so then feed with ferts.

It looks like PH or lockout to me

Thanks for the suggestions guys. Based on your cumulative advice I will flush them today and tommorow with water ph'd below 6.0 and then begin feeding again.

A question about feeding though, I will be without a way of measuring EC for a couple weeks (the wife and I just spent the bulk of our free $$$ clearing up some debt to get a mortgage). Is there a guide/chart somewhere that can give me kind of a baseline idea of what my EC is going to be like based on the amount of A and B I am using? My tapwater is about 80 ppm to start and I have not been using anymore than 1 ml of A/B each per litre. Plants are very very well rooted in their pots (I could not believe the root growth at first, blew me away) and vary from 6-9 inches in height. I wonder if I am under feeding them? I have underfed in the past on my last grow, up until I started growing again this fall I had only ever used 100% organic soil mixes and really on water'd with plain tap water. I am possibly over cautious with my use of nutrients. Anyways, I will flush, cut out the foilar feeding for now and start nutrients again this weekend. Thanks again

Low the ph to 5,6 for some time, in order to increase Ca uptake. Flushing with a Epsom salt solution will help in reducing the Ca content in the coco, wich anyway is difficult to ride off once its fixed in the medium. Once the problem solved, you can use higher ph. If you want to run a fixed ph, 5,8 works better than 6 for coco, in my experience. Anyway, what ive found to work best to avoid Ca/Mg deff is alternate 5,6 and 6 ph waterings.

jesus! why would you flush with epsom salts in your coco!? and since when is running coco over pH 6 too high?

[aeric]

I was going to say lay off the foliar feeding...knna knows his shit so do whatever he says lol...and they probably need more nutes. The tapwater is not your problem IMO, sounds very good infact. My typical feedng rate at that stage u have them in is a steady 7-8 ml/gal (double yours = roughly 2ml per L) and my tap ppm is a bit higher.

Your lovely wife takes lovely pics.

[Caligrown]

Originally Posted by knna

I believe you are overwatering, at first. Second, i dont like foliar feed evryday at all. In my experience, it gives you more problems than benefits, and anyway, it isnt required.

But the sign in the leaves arnt directly caused by that, but but for too high ph. You have a typical Cal/mg deff (of both), caused by running ph over 6, leading to Ca accumulating in the coco, and displacing Mg, thus the Cal/mg deff.

Low the ph to 5,6 for some time, in order to increase Ca uptake. Flushing with a Epsom salt solution will help in reducing the Ca content in the coco, wich anyway is difficult to ride off once its fixed in the medium. Once the problem solved, you can use higher ph. If you want to run a fixed ph, 5,8 works better than 6 for coco, in my experience. Anyway, what ive found to work best to avoid Ca/Mg deff is alternate 5,6 and 6 ph waterings.

Cannazym works greats, but it dont fight salts build up, as many people seems to believe. Runoff either. Salts build up refers to a bad balance in the coco between cations (Ca, Mg, K) fixed in it.

KNNA, What ratio do you recommend for the epsom flush? This stuff is confusing because coco is supposed to be inert....

[BlueHaze]

don't use esalt in coco. You having ph problem. try to get a ph pen the fastest you can or calibrate the one you have and flush and flush. Don't add any salt. Very wrong advise.