Yes and that's due to the very nature of the nutrient your using.
Anything Urea based is not good. VERY salty.
Try and avoid any brand that uses Urea in the base formula's for Veg and Bloom.
DO add to your formula some type of Myco. These can be in the form of a "Zyme".
Some well known liquid "zyme's" are,
Canna Zyme ,, from Canna
Power Clean ,, from Hesi
Zyme ,, from Cyco
Voodoo juice ,, from Advanced Nutrients (WARNING: AN's base nutrients are formed with UREA! avoid).
There are powders and of course what I use. A home made AACT tea.
These will help you avoid the "brick". They can also help reduce nutrient use some what. This fact is mostly related to the use of an AACT tea.