Hydros means hybrid variety
Actually, hydro doesn't mean hybrid.
A hybrid is a variety that originates from two distinctly different varieties cross pollinated.
Hydro is short for hydroponics, which is the type of growing where the media is inert, so provides no nutrients itself, and the plant relies on the water to carry the nutrient solution. Methods like deep water culture, rockwool cubes (with drippers or hand watered), flood and drain (a.k.a. ebb and flow), nutrient film technique, Kratky method, and even growing in coco coir is considered hydro if it's pure, or used only with other inert ingredients like perlite or clay balls.
In some parts of the world though many people wrongly use the word 'hydro' as an adjective for any potent weed. This is bad practice as it devalues the much higher quality (in my opinion) organically grown weed like what you're growing.
It's actually an insult when somebody calls totally organic sun grown cannabis "hydro" just because it looks and smells good or is very strong.