Hey guys I'm new to the hobby I picked up a hammer and it seems not to be extending fully I'm thinking it's the light I'm running stock pcs right now and debating on a smatfarm 100w. I just orders a salifert kit to test alk calcium and magnesium been doing 5 gallon weekly water changes. Any ideas will help I'll post up the parameters when I get the kit in a few days. Thank you guys