Yes. And get a pH and EC meter. I suggest a Bluelab Combo meter. Keep it clean and calibrated. Follow the light feed chart on Cannas website. Its pretty spot on. Skip all the pricey additives at first. Maybe just the expensive but very effective Rhizotonic. Its perfect for already rooted cuttings.But really just use the base. 2 and 3 gallon fabric bags are perfect for just about any size indoors for most growers. Make sure you know what yiur starting water ec and pH is too. Always use a nutrient solution...never plain start water. Search this forum for all the coco coir growing threads and stickies you can. Take notes...and go for it. Its easy. Cannas brick or loose bag coco coir needs no rinsing. Its quality. Washed and buffered to a high professional standard. The nutrient lineup is foolproof. They have ALOT of experience doing what theyve always done. All you need to do is do your part and follow some simple rules. The whole Canna program is pretty much dkne for you....and growers all over the planet use thier products to grow stinky buds with minimal effort.