Lucas Formula - Bloom nutes

Far East Buds

Well-Known Member
Ok so I'll summarize.

I am on my 3rd/4th grow how ever you look at it as I started perpetual pretty much right off.

Running 300W MHS setup for veg and 300W true LED for flower.

Misc strains doing a variety....

For simplification reasons I have been using the Lucas formula and catering it to my needs. Being a Noob I had deficiencies in most of my grows except the last. Still had some but minor stuff...

Ok Lucas still needs Cal/mag.. learned that one. Help out those roots... ok dutch masters zone in there...I knew i needed to cater some flower nutes so I thought Bud Candy would be good... But knowledge is power so I found out that it lacks stuff to be complete for flower. I use GH lucas nutes throughout flower as well but scale them back some with the flower supps taking up the slack. So this is still skipping some stuff the plant still needs I recently found out.

So I was given a recommendation of using GH kool bloom liquid as well as the bud candy with the lower GH lucas still added...


Anyone out there using Lucas plan ? What do you switch up for flower? Supps?

Any info and time is greatly appreciated... My results are good but my plants always seem to get hit once or just not as healthy as i feel they should be with the care i give them.


Appreciate it

FE
 
Do you add anything extra in bloom?

Do you just use those only all the way through?

Yea I haven't tried adding anything because I really haven't had a reason too. I get a good yield and potency. Are you seeing signs of nute def.
 
Well different strains I have or have not.... But I was reading that I might be missing some coverage on some things by not adding some more stuff in flower. So I wasn't sure if i should switch what I use or add something additional.
Curious what others are adding for bloom....

Thanks for interest...
 
Well different strains I have or have not.... But I was reading that I might be missing some coverage on some things by not adding some more stuff in flower. So I wasn't sure if i should switch what I use or add something additional.
Curious what others are adding for bloom....

Thanks for interest...
I just posted a related question over in my journal. I aS under the impression I didn't need to add cal mag if I was in soil. I keep a wary eye out anyhow

Phrum the light room.
 
Lucas Formula, sometimes known as the Lucas Ratio, is less complicated than it initially seems. It is nothing more than a basic recipe of nutrients to give your plants during both the vegetative, and the flowering state.

The original recipe uses 2 parts of the General Hydroponics 3-part FLORA series (Gro, Micro, Bloom) nutrient system, but Lucas Formula may also be used with Advanced Nutrients, GH's dry nutes (Maxibloom), etc.

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Lucas Formula using General Hydroponics 3-Part System

General Hydroponics makes a 3-part system named the FLORA series. It consists of FLORA GRO, FLORA MICRO, and FLORA BLOOM. These are 3 bottles you buy, that you would normally use together throughout the entire grow. You may use it as per the instructions on the bottle, with excellent results, but...

Lucas figured out that FLORA MICRO contains enough nitrogen, and everything else that MICRO GRO contains, that you use it with FLORA BLOOM alone, saving you from having to buy FLORA GRO.

How do you use it? Simple. Add 8ml of Flora Micro (dark red stuff) to 1 gallon of water*, mix, and then add 16ml of Flora Bloom (pink stuff) into the water, and mix. Done - unless you're growing in coco. If so, see below.'

GH MaxiBloom dry nutes
Lucas Formula using General Hydroponics Dry Nutrients (Maxibloom)

MaxiBloom and MaxiGro are dry nutrient also from General Hydroponics. It turns out, Maxibloom, used in a ratio of 7 grams per gallon of water*, is very close to the original Lucas Formula (above.) You do not need MaxiGro, and so this is the cheapest and easiest recipe to use.

Add 7 grams of Maxibloom into 1 gallon of water*, and then adjust the pH, and stir vigorously to dissolve the Maxibloom in the water. I advise putting the 7g of Maxibloom into a cup of warm water, dissolving it, and then adding it to the remaining gallon of water, before pH adjusting and mixing again.

GH Flora Nova Bloom (one-part 4-8-7)
Lucas Formula using General Hydroponics FloraNova series

This is probably the easiest (but not cheapest - see MaxiBloom above) feeding plan available. If you're using General Hydroponics' FloraNova Bloom 1-part system, simply add 8ml of FloraNova per gallon of water* and feed.

Growing in Coco Coir (cococoir is from the Coconut Husk)
Lucas Formula when growing in Coco Coir - Head's Formula

If you're growing in coco, you may need to adjust the Lucas formula slightly to compensate for a property of coco which may result in a calcium or magnesium deficiency. How? You may be able to get by simply by adding 1-2ml of calmag (or MagiCal+), or 1 gram of Epsom salt (any pharmacy carries this), per gallon of water, before feeding the plants.

There is a modified formula specifically for Coco that consists of using a different ratio: 6ml of Flora Micro, and 9ml of Flora Bloom, per gallon of water, along with 1 gram of Epsom salt per water.

Either works, but be sure to try Head's Formula if you're having deficiencies or other nute/pH problems.

If you are confused or unsure, ask your Weed related questions here!

Compact Fluorescent Lights, 200w PL/L, 55w PLL etc
Low light ratio, and flowering vs veg

Lucas Formula should be used in the same ratio throughout the grow. There is a misconception that one should use 5ml of Micro and 10ml of Bloom, when in veg, and switch to 8ml of Micro, and 16ml of Bloom, when flowering.

This was never stated by Lucas himself. He originally stated that the 0-5-10 ratio was for LOW LIGHT situations (fluorescent lighting like PL/L and CFLs, or HID lamps less than 400W), whereas 0-8-16 is for medium to high light (400W+)

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* What type of water should I use? What about pH/ppm?

The original formula uses reverse osmosis, or RO, water, and is intended to be used without having to measure pH and ppm. Reverse Osmosis water makes this possible because it should, in theory, be the same for everyone. It is filtered water, which you can get either by buying a reverse osmosis filter system, or just buying bottled water (among other brands, Dasani, the bottled tap water is reverse osmosis, for example). One may also use dH2O (distilled water) with good results. You can get distilled water from most convenience stores (Walgreens, CSV, Rite-Aide, etc..)

Lucas Formula for seedlings/cuttings

For young plants (< 4 weeks old) or cuttings, which may not be able to handle a full strength feeding formula, may require that you dilute the nutrient solution before feeding. This is OK, just make sure you keep the correct ratio when mixing. For example, 50% strength would be 4ml Micro and 8ml Bloom, or 3.5g of dry Maxibloom per gallon.

Lucas Formula with tap water

You may use Lucas Formula with tap water successfully, but this may require pH adjusting on your part. Keep the pH close to 5.8.

Can I use additives with Lucas Formula?

You may. It is recommended that you do not introduce additives until your setup is dialed in. After you've ironed out any deficiencies and fully understand how your plant and strain likes to be fed, feel free to begin using additives (such as Floralicious) - not that the additives will help. For increased quality and yield, focus on good genetics, and ample light and temperature control, rather than trying to compensate for those with additives.
....
Isn't it great what one can cut and paste...
 
Ive used FNB and the heads recipe all thru grows. in coco and dwc.. worked great. Kool bloom 1 feeding week 3, thats it, if that even... ive used it and skipped it and can tell no difference.
 
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