ff is good for oder plant, not for seedlings to hot if you read here most problems people have is to young of plants in ff or they are in a big ass hurry to add nutes a get there plants in trouble. people need to slow down a smell the roses.when plant has good root system about 8 to 12 inches...
first becarefull of venting in sewer line if fan stops working could cause methane gases to enter house dangerus for humans or pets, second just take the air from the basement it will wor fine
yes water a plant that size is going to use a lot of water espesaly when the temps went high you might have to water every other day depending on container size,root mass. temps
i think your ppms are way to high for seedlings i dont go over 300 and every week raise it by 100 i also start with 0 to 30 ppm in my water keep ph 5.5 your room temps good whats water temp should be around 68 with that said in my opion nute burn lockout
your top branches will have big firm bud do to light you can hang or wall mount lights down where lower branches are were top light cant penatrate threw conopy light =bud
1 inch cube would be ok but i would throw the shreded stuff away and use hydroton ,lava rocks or plain old crush gravel if budget iis tight you want moister plus air if need more help ask
its good that your learning by your mistakes and know how to find the cure for sick plants by books and other information thats out there instead keep asking questions that are easly found on internet like most people do on here
put fan in there blowing around fresh air to alimante some heat also helps to make stem on plant strong to carry bud without falling over NEED EXHAUST FAN to exhaust the heat should have intake fan as well but if not have opening to let fresh air in room temp should be around 76 and if you...