My White Widow plant

Here is my 2 week old white widow plant, I will post new pictures soon.I fed her with small amount of Floranova grow 4 days ago.
Any comments will be appreciated.

yu should wait until week three or four or until the third node to feed. What is yur medium? Look good so far, no burns. Water when it is dry two inchs down then do a quart a gallon. What is yur water source? If it is ro then you may need cal mag. Flora nove was meant for ro water if you want it perfect. Medium is good to post. What are the lights?

Soil: Mix with peatmoss-a little bat guano-perlite-dolomite-leonardite
Light: 250 Watt MH until flowering, then I will replace it with 250W HPS
Water PH: My tap water ph is 7.5, by using ph downer i made it around 6
Soil PH: at the beginning it was around 6.5 now it is 7.5
Humidity: between 50-60 (by using humidifier)
Temp.: between 23-27C

My MH lamp broke down, so I had to replace it with flourasan lights for 2 days I will fix the problem tomorrow.
DO you think there is a problem with the new coming leafs? I think they have yellowish color at the end of the each leaf?? (rest of the plant is okey only the newcomers at the top has this) (I dont know if that is a problem, just checking it out)

btw, plant is 4 weeks old, do you think i need to go for pruning? if yes can anyone share a method

thanks alot

Looks good.........

/up

need other comments

can u post a pic of the full plant? looking good btw

i agree. when i over fert it usually discolors the tips of the bottomer leaves, never the new growth.

what about pruning?

NO! find the def and fix it, dont go cutting that new growth unless your fimming or topping.

are you sure your not overwatering.

lookin good man

Some of the leafs of the plant has this problem (yellowish color).What should I do to these leafs and what do u think is the problem?

Anyone? almost 4 leafs has this problem now

The wilting of the leaf looks overwatered to me. How often do you water? Always let the soil be dry in the top 2'' before considering another watering. This varies from pot to pot, but usually it's 3-4 days for me. Also do you pH the runoff? Need to find out if that pH is in the correct range so the roots can uptake the nutrients. If she's on a good watering schedule, correct pH range, and your nute dose is moderate then you should be problem free.

Usually the plant symptoms we see are from a stress put on by ourselves. The plant will recover, but who wants a plant in recovery, we want healthy green ones! Search marijuana plant problems and you'll find a bunch of links. Figure out what you have done to cause the problem and fix it. I'd say usually people over do things which leads to the problem.

I have one nirvana white widow seed as well and I am looking forward to growing it out, hopefully female! Best of luck

Soil ph level is 7.5, watering is okey, I water when its dry (5.5ph water), but I cannot lower the ph of the soil.
As I said this week I had a problem with the lamb, but it is now okey, I cut 3 yellowish leafs so far

I grow WW well in soil - It will grow a very large center cola and the buds are more sparse along the cola - and tall. It responds well to table topping (cutting the top off to promote large side chutes) if you have the veg time and height. I have one right now about 5 weeks into flowering that has 6 equally large colas that are starting to look absolutely marvelous - but really tall.

A couple pointers/observations:
ph of 7.5 - is this the runoff or the actual soil ph through one of those metal probes? Runoff water is the best place to check your ph - I have never had any luck with the cheap soil probes. Ph of 7.5 is not ideal - you will want it around 6.5
Don't cut/worry about every little discoloration - new growth, by design will be lighter in color as the plant shifts the nitrogen from older parts of the plant to the new material. Use leaf discoloration as an indication of potential problems that need attention, don't overdo it by jumping too fast. Slow and steady.
Correct your ph first, then see what happens. In my experience, 8/10 it is the ph that prevented uptake of the needed nutrients that leads to nutrient imbalances - not necessarily the nutrient itself.

I would also recommend against foliar spraying the plants unless applying neem oil or some other remedy. It promotes high humidity in the canopy that can lead to powdery mildew unless you are actively reducing the RH in your grow area.

How should I lower the ph of the soil?

Soil ph is dependent on your soil composition and the presence of ph buffers (e.g. dolomite lime, etc.). To really achieve balanced soil ph, you should test your soil mix with your nutrient strain to ensure the appropriate levels prior to your grow. Understandably that is not going to help you much now. To lower the ph of the soil after the fact will require the addition organic materials (compost, peat moss, etc.) that are acidic when they break down. You wil have varying degree of success with this dependent on the ph buffers you have in your soil that are keeping it alkaline. You wont correct this overnight - and if you do - you will likely shock your roots. Just slowly adjust over a week or two by keeping your water lightly acidic (around 6-6.5) with plenty of runoff. Monitor the ph until it gets back into the 6.5 range and adjust accordingly. If you choose to add in some organic material to aid in adjusting the ph, work it into the top layer so that you don't damage your root ball.

Your plants look good, and just a couple minor tweaks and you will continue to have them do well. Good luck!