First time grower

I am growing two plants, one is pineapple chunk and the other is 24k gold. I have a 1000w led light (yes sorta overkill I know) and I’m growing in hydroponics using the fox farm feeding schedule. Both of my plants are in the third week of veg and the pineapple chunk is showing signs of discoloration on the fan leaves. This is my first real grow and I’m not experienced to know what is going on. Any help on this topic or advice on anything else is greatly appreciated. “Attached feeding schedule below”

Coleevans321 said:

I have a 1000w led light (yes sorta overkill I know)

Click to expand...

Really? Many manufacturers say 1000w and it only draws 300 watts. What light do you have?

Your plant shows some signs of what could be a potassium deficiency. Is it only happening on the lower leaves?

May I ask what your pH is running? PPM? Do you use RO water? If not whats the PPM of your tap h2o?

May we see a picture of your roots? (if possible with your setup)

Also, some tip burn from too strong of nutes. Probably from following the feed chart which is almost always too aggressive.

rkymtnman said:

Also, some tip burn from too strong of nutes. Probably from following the feed chart which is almost always too aggressive.

Click to expand...

Well that tip burn could be a potassium deficiency. I am interested in knowing the actual PPM he is running. The fade near the end doesn't seem like nute burn.

Renfro said:

Really? Many manufacturers say 1000w and it only draws 300 watts. What light do you have?

Your plant shows some signs of what could be a potassium deficiency. Is it only happening on the lower leaves?

May I ask what your pH is running? PPM? Do you use RO water? If not whats the PPM of your tap h2o?

May we see a picture of your roots? (if possible with your setup)

Click to expand...

Well I guess I could say my manufacturer says 1000 watts too. I’m not really sure to know what it draws but I will put link at bottom. But yes it is only on the bottom fam leaves. I noticed it 3 days ago and it’s gradually getting worse. Im not really sure the exact ph. I use the scale where you put 3 drops in a tube and judge it based off of color. I try to keep it around 6.5. I use disani water (supposedly it’s RO water) and I have never checked the ppm due to not having a gauge. I will definitely get one tomorrow if necessary!!!

Renfro said:

Well that tip burn could be a potassium deficiency. I am interested in knowing the actual PPM he is running. The fade near the end doesn't seem like nute burn.

Click to expand...

This is the light I am using. If I need to change this I can do that too.

Coleevans321 said:

I try to keep it around 6.5.

Click to expand...

For hydro you want a pH of 5.8

TBH that light is garbage. If you want a really good LED look at HLG, Timber for example. They will not be cheap. You get what you pay for.

With quality LED you will not only get much better results but you can cover the same area a 1000 watt HPS covers (16 sqft) using about 650 watts.

How big is your grow area? I can point you to some better lighting options.

Renfro said:

For hydro you want a pH of 5.8

Click to expand...

I just called my local fish store and they told me they had a ph meter that tells ppm and ec. Not really to experienced on ppm and ec though so I will have to look into that.

Renfro said:

How big is your grow area? I can point you to some better lighting options.

Click to expand...

Growing area is up to 4x8 but I only have 2 plants in it. My other strain is 24k good and it is looking perfect.

Many fish PPM meters use a different conversion rate from EC like 0.64 or 0.7 instead of 0.5. Just have to know what your dealing with.

I don't like combo pens.

Blue Lab makes a very good pH meter, Apera makes a good pH meter too, Hanna makes ok ones. Cheapo ones can be very unreliable and may need calibration every use.

You can go cheaper on a PPM pen if you wanna save money. I have some cheapos that work just as good as my pricey one.

This is an excellent light for a 4x4 area:


So is this, just dimmed a little as it can cover 4.5 x 4.5 feet:

Renfro said:

Well that tip burn could be a potassium deficiency

Click to expand...

If he/she is following the FF schedule, it's tip burn from too strong EC.

rkymtnman said:

If he/she is following the FF schedule, it's tip burn from too strong EC.

Click to expand...

Well he was trying to run his pH at 6.5 so lets see what happens when he switches to 5.8. I agree that most nutrient labels recommend a high feed PPM but many of his leaves look fine. Look at his 5th pic. The older growth seems most effected. I am saying the high pH was locking out some stuff, including potassium.

A proper ph and ec (ppm) meter will really serve you well. Without those you’ll be better off in soil

Renfro said:

I am saying the high pH was locking out some stuff, including potassium.

Click to expand...

K is readily available from 5 to 7.5 in hydro

Renfro said:

Well he was trying to run his pH at 6.5 so lets see what happens when he switches to 5.8. I agree that most nutrient labels recommend a high feed PPM but many of his leaves look fine. Look at his 5th pic. The older growth seems most effected. I am saying the high pH was locking out some stuff, including potassium.

Click to expand...

Alright I went ahead and spent the money to get a decent ppm meter. It is at 1840. Is this bad and if so I would you advice fixing this?

1840 is way too strong. @rkymtnman nailed it. cut that down to about 1000 PPM, then pH it to 5.8

Coleevans321 said:

Alright I went ahead and spent the money to get a decent ppm meter. It is at 1840. Is this bad and if so I would you advice fixing this?

Click to expand...

whoa!!! i believe you should give a flush with plain water for 24 hrs. then start back with MUCH lighter nutes. try maybe 500 ppms to start. then work up slowly if they can handle it. i think that ppm caused a nute lockout which is causing the K deficiency that @Renfro mentioned.
and learn how to use your ppm meter to tell if the ppm is too high, too low or just right.