One horsepower = 745 watts, so 1/10 hp = 75 watts.
This is an important consideration. If the chiller is inside the grow space, you’re just taking heat from the water and pumping it right back into the grow room - which means more heat in the grow room which means more heat in the water that needs to be removed.
Plus, these things are not 100% efficient, so your going to be putting even more heat into the room than you take out of the water.
Your water may end up cooler, but your grow space will be hotter. You need to plan for that or do the things @MicroDoser suggested to handle that excess heat.