Welcome @Zahraa_Msa, so happy to have you! You have received some great advice from the team above. Can you tell us a bit about your growing environment? What is the temperature and relative humidity range inside your grobo? What type of water are you using to fill your reservoir? What is the temperature of the water once inside the reservoir and cycling (requires aquarium temperature display w/probe)? These are all very important factors when growing this incredible plant, let us know where your stats lie and we will be able to better advise you!
Also it would be wise to begin researching and forming a solid plan that you will stick to for defoliation (pruning/trimming). I have attached a few links to get you started below.
Most of all, have fun with this process. It truly is very rewarding! I have found few things to be less stressful and more zen than growing cannabis 
. Know that we are all here for you should you need any advice or direction. Should you have any concerns ask often and ask early. Better that we get you sorted early on before anything catastrophic has taken place. You’re going to love this journey, I look forward to watching and contributing on your progress!
so im not sure. I have also ordered hydroguard and was wondering if I should follow the instructions on the pack or not?
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