Lucas Formula

[ocitown]

BTW,got a liter 9 months ago and used it on all my stuff on each watering with great results and still have 4/5th left in the bottle.

[IMgreen]

nice!

anything that lasts a really long time is a plus in my book!

[RobsGreen]

Hey IMgreen, just wonder what you did to get that mr clean auto dry gun to work properly? I thought I read in your thread that it did nothing, could have been somewhere else though.

My PPM also goes up when lights are off and down when lights are on but it only changes about 20ppm the most.

[IMgreen]

yeah I wrote that it didn't do nuthin!

as it turns out you need to turn the dial ON it to USE the filter!

and it even came with a card with PICTURES showing you how to use it, but it dont help when you dont even look

it made my wife laugh cuz I never RTFM

ever

[RobsGreen]

LOL, done that a few times, glad it works now just for how long? Hey if you read that manual it might even say.

[RobsGreen]

Originally Posted by screwdababylon!

hell yeah!!!!!

i found 1 strange thing about lucas
not shure if its me who coused it but anyway:

THE PPM IS RISING FEW DAYS AFTER MIXING A NEW SOLUTION
i just made a 870ppm water and three days after its 1050!!!!!!!!!!
and im toping with the tap water!!!
any ideas why could it be?

Here's a quote from Lucas that might help explain it.

"There are many ways to screw up a bubbler grow. Tops on the list is using too small a nute volume, which most folks in a bucket experience.
The problem with buckets, besides having to lift the lid off to change nutes, is that the amount of nutes is so small that evaporating a single gallon out of it, which can happen in one day under 250watts, will cause significant nute overconcentration. This will also create large pH swings. Also, with such a small volume of nutes, you will need to change out the whole mix very frequently, which many folks wont do because it is such a pain to lift the lid off the bucket. Then they will have pH problems, root rot problems, and plant health problems."

[ocitown]

Originally Posted by RobsGreen

Here's a quote from Lucas that might help explain it.

"There are many ways to screw up a bubbler grow. Tops on the list is using too small a nute volume, which most folks in a bucket experience.
The problem with buckets, besides having to lift the lid off to change nutes, is that the amount of nutes is so small that evaporating a single gallon out of it, which can happen in one day under 250watts, will cause significant nute overconcentration. This will also create large pH swings. Also, with such a small volume of nutes, you will need to change out the whole mix very frequently, which many folks wont do because it is such a pain to lift the lid off the bucket. Then they will have pH problems, root rot problems, and plant health problems."

RG, Do you remember the rule of thumb for the size of res. based on the plant numbers and their solution quantities on multiple plants for one res.?

[IMgreen]

you'd think so right??

it says it stops workin when you see spots on your car...

so it works until it doesn't

thats funny

[RobsGreen]

Originally Posted by ocitown

RG, Do you remember the rule of thumb for the size of res. based on the plant numbers and their solution quantities on multiple plants for one res.?

I haven't seen him mention anything based on plant quantity, its usually light power. For every 50 watts use 2-3 gallons of water for the res. I guess the more light power more water is used up so to keep things working properly you need more water. My res is just big enough for my light according to Lucas, I have about 16-18g of water.

[RobsGreen]

Originally Posted by IMgreen

you'd think so right??

it says it stops workin when you see spots on your car...

so it works until it doesn't

thats funny

LOL, yeah I guess that would say somethings wrong.

[ocitown]

Originally Posted by IMgreen

you'd think so right??

it says it stops workin when you see spots on your car...

so it works until it doesn't

thats funny

Originally Posted by RobsGreen

LOL, yeah I guess that would say somethings wrong.

The vagueness of their info is because of the starting PPM,if its high it wont last as long as lower PPM will given the same water is used.

[screwdababylon!]

Originally Posted by IMgreen

screwdababylon! did you find out where the upper limit of nutes is for your plants?

I am doing that right now. will push the food as high as I can until I burn the leaf tips, then will back it down a bit and keep it there for the rest of flowering

GL

hi!
well i did 1050 maximum (05 EC) and it was fine
i dont want to burn em becouse i want as fast and as big yeld as possible
so i guess i wont go further 1100 and its enough i think

[screwdababylon!]

Originally Posted by RobsGreen

Here's a quote from Lucas that might help explain it.

"There are many ways to screw up a bubbler grow. Tops on the list is using too small a nute volume, which most folks in a bucket experience.
The problem with buckets, besides having to lift the lid off to change nutes, is that the amount of nutes is so small that evaporating a single gallon out of it, which can happen in one day under 250watts, will cause significant nute overconcentration. This will also create large pH swings. Also, with such a small volume of nutes, you will need to change out the whole mix very frequently, which many folks wont do because it is such a pain to lift the lid off the bucket. Then they will have pH problems, root rot problems, and plant health problems."

yeah thats a good one

it might be a problem for me on the later stages
i dont want to screw the stealthness of my cab by ading a huge suspicious res near to it))) so i guess all i can do is a third bucket between em as a res
like some peeps do here but i think that 6 galon res is aint shit for 2 x 5 galon buckets
shitty...