First timer needs help!

Cal mag for sure but led grows use more cal mag check out molasses too it's pure sugar but it feeds soil not plant works wonders I never not use it

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Both but make sure molasses is unsulphured

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Good grow soils will support your plant for a long time. I would go another size between the cup and the 5 gallon unless you want to sit around for a couple of weeks and wait. When your plant grows wider and taller than the Solo cup, it's time for another container. We go to a 1 gal. From the 1 gal, I go to whatever I'm going to flower in...usually a 7 gallon. You've only created enough room for about 1 plant there...hope you get that. It's as important during flower that they have space....almost as much as light. The better light can penetrate the plant during the flower cycle, the better bud development you get overall, so I wouldn't attempt more than a single plant in that size space.

Nutrients are nothing more than plant food. Like I said above, a good soil will support a plant for awhile. Much like you don't start an infant out on steak and potatoes, you don't have to feed a plant heavily until it's matured a good bit. You need to let it use the nutrients in the soil first before starting to pour a bunch of chemicals into your plant unless you want to fry it. The fresher the soil, the more nutrition it will have in it. But of course, as a plant grows in size and matures, it will eventually use up the nutrients in the soil and unless you repot again...and you can if you want, you have to start feeds. We use very little in the way of nutrients above what comes in our soil. By understanding when and how to repot a plant, you can do it with the soil alone if you want. Light is the most important element of your grow. If you have a nice healthy plant and adequate wattage/quality (spectrum) for the cycle, you should be able to produce a nice harvest. Would get larger fan than a clip fan. Need good strong air around your plants at all times. In any small space, light is going to create heat....regardless if it's a cool light, so you'll need good air going to disperse that heat during the time the light is on. We don't give any nutrients at all to speak of until the latter part of the veg cycle and then it's just to boost the plant a little bit. If you really want to use nutrients to your benefit, and you should, take the time to read about the plant itself......how it grows, what it needs nutritionally throughout the different cycles of it's life, etc. There are specific times during the development of the plant that you can use nutrients and make a big impact on the growth of the plant. But unless you know what you're doing, I suggest strongly that you use them sparingly until you get a better understanding of what you need. The color of the foliage of the plant will always tell you what's going on. If it's not happening on new growth, then it's not a problem. Old growth dies off throughout the life of the plant and is normal. If you have weird things going on with the new growth though, you have problems. Not understanding the plant and it's needs can leave you lost. There are some good vids on YouTube by NPK University that can explain more about feeding the plant. But learning how to do this and really knowing all aspects of it takes some time and some work. You learn the most by actually doing it. But you desperately need that good base knowledge of how to take care of the plant to keep it healthy. It's certainly not rocket science though or I wouldn't be doing it myself. LOL The most important thing I can think of to tell you is to never ever ever water your plant until you can lift the container....regardless of size...and it feels light as a feather. If you feel weight when you lift it up, that is moisture still in the soil and it's not time yet. This applies regardless of how long it takes to happen. A young plant uses less of everything than an older, more mature plant and they hate having their roots sit in wet soil constantly. You have to give them defined wet/dry cycles or they will not stay healthy. Most new growers kill their plants by keeping them wet constantly...so don't do that. Best of luck to you! TWW

 

Good grow soils will support your plant for a long time. I would go another size between the cup and the 5 gallon unless you want to sit around for a couple of weeks and wait. When your plant grows wider and taller than the Solo cup, it's time for another container. We go to a 1 gal. From the 1 gal, I go to whatever I'm going to flower in...usually a 7 gallon. You've only created enough room for about 1 plant there...hope you get that. It's as important during flower that they have space....almost as much as light. The better light can penetrate the plant during the flower cycle, the better bud development you get overall, so I wouldn't attempt more than a single plant in that size space.

Nutrients are nothing more than plant food. Like I said above, a good soil will support a plant for awhile. Much like you don't start an infant out on steak and potatoes, you don't have to feed a plant heavily until it's matured a good bit. You need to let it use the nutrients in the soil first before starting to pour a bunch of chemicals into your plant unless you want to fry it. The fresher the soil, the more nutrition it will have in it. But of course, as a plant grows in size and matures, it will eventually use up the nutrients in the soil and unless you repot again...and you can if you want, you have to start feeds. We use very little in the way of nutrients above what comes in our soil. By understanding when and how to repot a plant, you can do it with the soil alone if you want. Light is the most important element of your grow. If you have a nice healthy plant and adequate wattage/quality (spectrum) for the cycle, you should be able to produce a nice harvest. Would get larger fan than a clip fan. Need good strong air around your plants at all times. In any small space, light is going to create heat....regardless if it's a cool light, so you'll need good air going to disperse that heat during the time the light is on. We don't give any nutrients at all to speak of until the latter part of the veg cycle and then it's just to boost the plant a little bit. If you really want to use nutrients to your benefit, and you should, take the time to read about the plant itself......how it grows, what it needs nutritionally throughout the different cycles of it's life, etc. There are specific times during the development of the plant that you can use nutrients and make a big impact on the growth of the plant. But unless you know what you're doing, I suggest strongly that you use them sparingly until you get a better understanding of what you need. The color of the foliage of the plant will always tell you what's going on. If it's not happening on new growth, then it's not a problem. Old growth dies off throughout the life of the plant and is normal. If you have weird things going on with the new growth though, you have problems. Not understanding the plant and it's needs can leave you lost. There are some good vids on YouTube by NPK University that can explain more about feeding the plant. But learning how to do this and really knowing all aspects of it takes some time and some work. You learn the most by actually doing it. But you desperately need that good base knowledge of how to take care of the plant to keep it healthy. It's certainly not rocket science though or I wouldn't be doing it myself. LOL The most important thing I can think of to tell you is to never ever ever water your plant until you can lift the container....regardless of size...and it feels light as a feather. If you feel weight when you lift it up, that is moisture still in the soil and it's not time yet. This applies regardless of how long it takes to happen. A young plant uses less of everything than an older, more mature plant and they hate having their roots sit in wet soil constantly. You have to give them defined wet/dry cycles or they will not stay healthy. Most new growers kill their plants by keeping them wet constantly...so don't do that. Best of luck to you! TWW

 

Yes you need both!
Cal-Mag has NOTHING to do with PH..
Not sure what you mean by PURE WATER???
If you mean RO water, then most add cal-mag when watering with RO, since all nutrients are gone!
FFOF should be fine with NO nutes added for about 3-4 wks, then slowly begin nute regimen at reduced strength (like 1/4 strength to start, then observe)
BTW: soil grow water should PH between 6.2-6.8.

 

Really no need to up pot twice!
I transplant from a Solo Cup when the leaves reach the outer diameter of the cup..Then right into 5 gallon fabric pots..works for me and growth is rapid!

 

Yep..test your tap water with a GH test kit ($20 includes test drops, scale, and PH UP and Down).
Again, PH the tap water to between 6.2-6.8..Helps the plant to absorb her food, from the soil or added nutes later..
I run FFOF mixed with xtra Perlite and only begin Veg Nutes after about 4 weeks watering only..You can check your city water for minerals etc by using google..such data is made available on the net. ALSO, I leave the water standing for 24hrs before using it..WE have Chlorine in our water which dissipates in 24hrs..also temperature is not cold..just room temp

 

A nice helpful environment here