It sure is...it's restricting the roots. Any drainage holes in the bottom, btw?

There shouldn't be a problem with the plastics in the cup breaking-down and affecting the plants, but I wouldn't re-use 'em.
Rusty Trichome Reviewed by Rusty Trichome on . Whats wrong with my little ak-48's E-indoor or outdoor- Indoor E-soil, soilless, coco, aero, or hydroponic soil E-specific medium Foxfarms ocean forest CSL-Soil type/brand fox farms ocean forest HCL-Hydro/aero/soilless system type n/a SCL-Anything you have added to the soil none SCLR-Soil or slab runoff pH not sure E-Water source artesian well water E-Source water pH n/a HRT-Source water EC (if hydro) n/a Rating: 5