d_L_t Posted August 8, 2006 Share Posted August 8, 2006 hi all, my plants are developing brown spots on the fan leaves, just wondering whats causing it and I should I do anything or just leave it? Im using Ionic Grow with a ec of 1.0+, my ph is kept around 5.8, although this morning when I checked it dropped to 4.7+. any help would be great, cheers Link to comment Share on other sites More sharing options...
thclee Posted August 8, 2006 Share Posted August 8, 2006 is that tinfoil in the back i can see ? Link to comment Share on other sites More sharing options...
d_L_t Posted August 8, 2006 Author Share Posted August 8, 2006 is that tinfoil in the back i can see ? no, its recycled mylar!! Link to comment Share on other sites More sharing options...
thclee Posted August 8, 2006 Share Posted August 8, 2006 its just when i built my first growdrobe i lined it with tin foil and your pics look like the same damage to the leaf.the tin foil was acting like a magnifying glass.the little bumps in the tin foil were focusing the light in to 1 spot like a magnifying glass in the sun and burnin little patch`s like wot u got ,sorry no help Link to comment Share on other sites More sharing options...
mr_green01 Posted August 8, 2006 Share Posted August 8, 2006 it looks like the start of the dreaded nute burn Link to comment Share on other sites More sharing options...
Church Posted August 8, 2006 Share Posted August 8, 2006 it looks like the start of the dreaded nute burn Surely nute burn would start to express itself in the tips of the leaves first? Link to comment Share on other sites More sharing options...
mr_green01 Posted August 8, 2006 Share Posted August 8, 2006 it may do, i was just looking at the rust bits and the leaf in the background curling inwards just my 2 pence worth Link to comment Share on other sites More sharing options...
Guest Archangel Posted August 8, 2006 Share Posted August 8, 2006 Nute burn my outdoor plants have em cause i gave em to much bb grow.. But the leafs burned first.... Plant that size shouldnt need nutes should it? Link to comment Share on other sites More sharing options...
mr_green01 Posted August 8, 2006 Share Posted August 8, 2006 ionic again Link to comment Share on other sites More sharing options...
Bish Posted August 8, 2006 Share Posted August 8, 2006 Looks like the start of a fungal infection (rust spots) to me. Link to comment Share on other sites More sharing options...
d_L_t Posted August 8, 2006 Author Share Posted August 8, 2006 White paint is more effective than 'wrinkled' Mylar. If your gonna use it or foil, then it needs to be as flat as possible with no wrinkles. I think this is your problem. though im not 100% sure. I see, thanks. Ok I replaced the wrinkled stuff with new mylar, see how it goes! Nute burn my outdoor plants have em cause i gave em to much bb grow.. But the leafs burned first.... Plant that size shouldnt need nutes should it? I'm in hydro mate, its different because they get all their food from the soil... Started them off on low strength nutrient (formulex@0.5). here are some more pics for you to see, thanks for all the suggestions Link to comment Share on other sites More sharing options...
d_L_t Posted August 8, 2006 Author Share Posted August 8, 2006 Looks like the start of a fungal infection (rust spots) to me. cheers bish :wink: so how did this happen and how do I prevent/cure it? Link to comment Share on other sites More sharing options...
Muppet Posted August 8, 2006 Share Posted August 8, 2006 Citrofresh is good tack for fungal probs, have a mooch thro the shop for some. Fungal problems are usually caused/exaggerated by high humidity, poor air exchange or poor air circulation, or a combo of the 3. Link to comment Share on other sites More sharing options...
d_L_t Posted August 8, 2006 Author Share Posted August 8, 2006 Citrofresh is good tack for fungal probs, have a mooch thro the shop for some. Fungal problems are usually caused/exaggerated by high humidity, poor air exchange or poor air circulation, or a combo of the 3. thanks muppet.. I do have high humidity (75+) and the only air movement I have is a 100mm inline pulling in fresh air. I'll switch it around so its extracting instead. thanks for helping :wink: Link to comment Share on other sites More sharing options...
Muppet Posted August 8, 2006 Share Posted August 8, 2006 No worries chap. Try and get a little oscilatin' fan in their too, not only will the air movement help stop spores settlin' etc, it'll also give 'em some excercise and strenghen their stems for ya. Link to comment Share on other sites More sharing options...
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