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Here's the last 2 photos.

Hey all thanks for the feedback. I'm using 2 sets of lights right know the main light which has most of the healthy plants under it is a T-5 54 watt 8 bulb using a Sun Systems New Wave 48 reflector. The lamp was around 4 inches over the plants and is now 7" over the plants. I thought heat...

My plants are in the beginning of the 3rd week of veg. about 10% of them the smaller weaker ones are severely affected. The stronger plants have tip burn and yellowing leaf edges with curling up of the leaf edges. I was told by Roy at Advance that this was Magnesium deficiency. This started last...

Here's some shots of the damaged plants. I'm pretty sure they'll come back. Just a minor setback.:cry:

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Here's some shots of the roots already extending from the bottom of the pots.

2-20-08 I cleaned my res and stocked with new nuts. RO water PH 6.61 - PPM 17 Temp 17.9C Res with nutrients PH 6.13 - PPM 747 Temp 17.9C PH adjusted 5.62 Room Temperture ranges from 75 - 84 F 40 gallon res Advance Nutrients Sensi A 6oz Sensi B...

After I did the RO water flush the plants improved and after 2 water cycles I moved it back to the nutrient res. Well the plants were still having problems and I referred to the Indoor growing bible by JC. We knew by the symptoms the problems were magnesium deficiency and he describes a...

Well it's been a long week. It started with very fast growth everything was perfect. Then came the yellowing tips and leaves. The tips and edges of my leaves were also curling up. The problem was a magnesium deficiency I think caused by to many nutrients. The plants developed what Roy described...

When I described all the symptoms to Roy at AN he told me the plants had Nutrient lock. They specifically had a Magnesium deficiency. Here's symptom which made Roy say it was a nutrient deficiency. He asked about the outer edges of the leaves and weather the edges are curling up which the were...

I check the plants 3 or 4 times a day. If I'm going to spend the money on all the equipment, electric, water and take the risk growing I want to have a great crop with really high yield. There is definetly a learning curve that's for sure. Had I waited another day to react I would have...

I just spoke to Roy at AN and he said to flush the system for 2 watering cycles PH qadjusted RO water. Roy called the problem nutrient lock. I'm off to Home depot to pick up another res. Flushed the system with 5.6 PH RO water at the 2PM feeding. The results were amazing. I wish I had my...

Flushed the system with 5.6 PH RO water at the 2PM feeding. The results were amazing. I wish I had my camera with me. As soon as the table started draining I could the green rushing through the viens of the plant. I was shocked at how quickly it happened. I didn't want to move to get my camera...

he's a link to my post the other day. I sure it will help. https://www.rollitup.org/grow-room-design-setup/44223-my-expected-use-power-use.html

VictorVIcious You were 100% right about flushing the system. I just spoke to Roy at AN and he said to flush the system for 2 watering cycles PH qadjusted RO water. I'm off to Home depot to pick up another res and I'll update tomorrow.

I'm new to this so forgive my ignorance.:confused: When I flush the plant can I use tap water from a hose or do I need to use water from my RO? How long do I flush them for? After I flush should I flood the table right away or just let the system cycle like it normally would? Thanks for...

Hi Schmidty thanks for the followup. Plants are doing very well, but I think I'm dealing with a Nitrogen deficiency. I'll call Advance Nutrients when they open and deal with them. I think I should add some Sensi part A but I'm not sure. I'll post a couple showing there growth taken this morning...

I referred to the Jorge Cervantes bible which I bought and I believe this is a nitrogen deficiency.:confused: I'm using Advance Nutrients and looked on the website and can't figure out which nutrient to add for Nitrogen deficiency.:evil: 1st question confirm if this is Nitrogen deficiency...

I referred to the Jorge Cervantes bible which I bought and I believe this is a nitrogen deficiency.:confused: I'm using Advance Nutrients and looked on the website and can't figure out which nutrient to add for Nitrogen deficiency.:evil: 1st question confirm if this is Nitrogen deficiency...

I forgot to add on my ealier thread. When I spoke to Roy at Advanced he informed me the there nutrient calculator was incorrect and I way over fed my plants. Luckily no major side effects maybe a little leaf burn. If your using Advance Nutrients follow the cloning schedule for the 1st 2 weeks...