i'm growing Female Seeds C99 again this summer. love the strain but they seem to stretch right up to harvest day. last summer they grew to over 5 feet tall. lst is the method for this grow to keep them lower. GL
yes, those are leaf miners. generally they do not get bad enough to harm the plant, but i always take get rid of them. spinosad works great on them. i use Jack's Dead Bug i find at Home Depot for about $9. you can also crush the insect with finger nails. it's tough to get because they live...
i never use screens, either. i just break a solid piece of a bud that's just a little bigger than the hole in the pipe. then i fill the rest of the bowl up. i rinse my bowl with really hot running water for a few minutes every night. love squeaky clean glass pipes!