In the reaction provided:
\[ \text{BeSO}_4 + 2\text{NH}_4\text{OH} \rightarrow \text{Be(OH)}_2 + (\text{NH}_4)_2\text{SO}_4 \]
The products of the reaction are:
- Beryllium hydroxide, \(\text{Be(OH)}_2\)
- Ammonium sulfate, \((\text{NH}_4)_2\text{SO}_4\)
So the complete balanced equation shows that beryllium sulfate reacts with ammonium hydroxide to produce beryllium hydroxide and ammonium sulfate.