Well if you polled me, I would say yes. The 25lbs added FC of 123. The maximum recommended FC level is 20 for a pool with CYA of 50, so that is 6 times the amount and can cause damage to equipment, liners, etc.
If you include pool store employees in the poll, no telling what the results would be. I've never seen a group of "professionals" have so much bad information or just make stuff up for a sale. Yesterday someone reported that the pool store told them their chlorine level will give their daughters UTIs
If you are saying you have a TF100, that will get you all of the readings needed except for salt. That kit can be purchased separately here:
tftestkits.net