Overfeeding?

Renfro

Renfro

Well-Known Member
Tonycannavis

Tonycannavis

Well-Known Member
Don’t be like someone I know that’s writing this post right now and buys a cheap pen and then go crazy trying to figure out why Your plants dying been there done that not cool at all
 
steve870

steve870

Well-Known Member
cheap pens can definitely do the trick for some but you need to give yourself room for error. I did fine on my first two grows. Having a cheap one is better than nothing especially for checking your ec
 
Renfro

Renfro

Well-Known Member
PadawanWarrior said:
Nice. I just ordered some. Thanks man, but I'll probably bug you again when I get it and mix it up, lol.
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If you haven't yet, get a stirring plate, you will thank me later. Always use glass on one too, I have had the magnet wear a hole through plastic beakers when I forget and leave it running overnight lol mason jars work well, turn it upside down and the magnet sticks to the lid.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Renfro said:
If you haven't yet, get a stirring plate, you will thank me later. Always use glass on one too, I have had the magnet wear a hole through plastic beakers when I forget and leave it running overnight lol mason jars work well, turn it upside down and the magnet sticks to the lid.
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Thanks, what do you recommend?
 
Renfro

Renfro

Well-Known Member
PadawanWarrior said:
Thanks, what do you recommend?
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I just picked up a cheap one off amazon, figured I would see how long it lasts lol. I leave it running overnight a lot and so far so good. I am sure the more expensive ones are nicer but then I would have to worry about spilling salty shit on it. You don't need to bone up for the heated one.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Renfro said:
I just picked up a cheap one off amazon, figured I would see how long it lasts lol. I leave it running overnight a lot and so far so good. I am sure the more expensive ones are nicer but then I would have to worry about spilling salty shit on it. You don't need to bone up for the heated one.
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I saw this one.

Amazon.com: INTLLAB Magnetic Stirrer with 7PCS stir bar Set and stir bar Retriever: Industrial & Scientific

Buy INTLLAB Magnetic Stirrer with 7PCS stir bar Set and stir bar Retriever: Swizzle Sticks - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com

I see they have an Apera one too.

Apera Instruments 601 Powerful Magnetic Lab Stirrer with Electrode Holder, Speed Range: 0-2300 RPM, Max Stirring Capacity: 3000ml AI2803: Amazon.com: Industrial & Scientific

Apera Instruments 601 Powerful Magnetic Lab Stirrer with Electrode Holder, Speed Range: 0-2300 RPM, Max Stirring Capacity: 3000ml AI2803: Amazon.com: Industrial & Scientific
www.amazon.com

You don't have a link to the one you're talking about do you?
 
Renfro

Renfro

Well-Known Member
PadawanWarrior said:
You don't have a link to the one you're talking about do you?
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That intellilab is the one I ordered. Nothing fancy but it works. That Apera looks like it's nicer but in my case I went cheap on this one figuring that I would spill something on it sooner or later thus limiting it's life span. I know, I always preach against cheap stuff and if I thought I would be taking care of it I would probably buy the Apera, doubt you will require the holder for anything. Really though, not like it's critical gear like a pH pen. If you get the Apera don't forget to get some of the magnetic pills as I don't think they are included. I would get nicer ones because the cheapo ones are usually poorly balanced and when you try to spin them fast they fly off center and stop.
 
Renfro

Renfro

Well-Known Member
KCl is 74.5513 g/mol (according to google)

To make 1000 ml of 2 mole strength solution we would start with 900 ml of distilled or RO water, add 2 x 74.5513 = 149.1 grams of the KCl powder and stir until it's dissolved and then pour into a graduated cylinder and top off with your pure H2O to get a total volume of 1000 ml.

If I am correct you can dissolve about 340 grams per liter of h2o at 68F, that would be saturation.

You don't really have to be all uber precise with it really. I have often just done it to saturation and then added enough H2O to double the volume.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Renfro said:
That intellilab is the one I ordered. Nothing fancy but it works. That Apera looks like it's nicer but in my case I went cheap on this one figuring that I would spill something on it sooner or later thus limiting it's life span. I know, I always preach against cheap stuff and if I thought I would be taking care of it I would probably buy the Apera, doubt you will require the holder for anything. Really though, not like it's critical gear like a pH pen. If you get the Apera don't forget to get some of the magnetic pills as I don't think they are included. I would get nicer ones because the cheapo ones are usually poorly balanced and when you try to spin them fast they fly off center and stop.
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What magnetic pills do you recommend? I was gonna order the extra 7 that comes with the cheap kit. Or should I get something else? And will a quart Mason jar work as well as a glass beaker? Thanks again.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Renfro said:
KCl is 74.5513 g/mol (according to google)

To make 1000 ml of 2 mole strength solution we would start with 900 ml of distilled or RO water, add 2 x 74.5513 = 149.1 grams of the KCl powder and stir until it's dissolved and then pour into a graduated cylinder and top off with your pure H2O to get a total volume of 1000 ml.

If I am correct you can dissolve about 340 grams per liter of h2o at 68F, that would be saturation.

You don't really have to be all uber precise with it really. I have often just done it to saturation and then added enough H2O to double the volume.
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Perfect. Do you mean to add extra distilled or RO water to top it off to 1000ml, or my own well water? Thanks once again, lol.
 
Renfro

Renfro

Well-Known Member
PadawanWarrior said:
Do you mean to add extra distilled or RO water to top it off to 1000ml, or my own well water?
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You are kidding right?
Renfro said:
To make 1000 ml of 2 mole strength solution we would start with 900 ml of distilled or RO water, add 2 x 74.5513 = 149.1 grams of the KCl powder and stir until it's dissolved and then pour into a graduated cylinder and top off with your pure H2O to get a total volume of 1000 ml.
Click to expand...
 
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Renfro

Renfro

Well-Known Member
All the cheap stir bars I have tried were crap, couldn't even turn it up past 30 or 40% with most of those. The balanced ones I had much better luck with, most of those I could crank up so long as I ease the speed up so the water catches up.

This is the balanced set I was talking about:

Chobs - 11 Pcs Stir Bar Kit, 10 PFTE Magnetic Stir Bars, 1 PFTE Magnetic Stir Bar Retriever, Includes a Manual + Reusable Travel Case: Amazon.com: Industrial & Scientific

Chobs - 11 Pcs Stir Bar Kit, 10 PFTE Magnetic Stir Bars, 1 PFTE Magnetic Stir Bar Retriever, Includes a Manual + Reusable Travel Case: Amazon.com: Industrial & Scientific
www.amazon.com

I do like the 2 liter brown mason jars myself but smaller ones I also use sometimes.
 
PadawanWarrior

PadawanWarrior

Well-Known Member
Renfro said:
You are kidding right?
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I wish I could say I was, lol.

That's what I thought you meant, but I remember the BlueLab Soil Pen saying not to rinse with RO water, so I just wanted to make sure.

Thanks for making me feel like a real dumbass. Kidding man. I know that was a really stupid question. But in my defense, I am a stoner. I'm sure I'll have an even dumber one sometime in the future, lol.

Seriously thanks for all your help.
 
Renfro

Renfro

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