ssj_paul, the bloom effect and (specially) the water effect need a video card that supports pixel shaders. It might seem unbelievable but there are people with low-end graphic cards.
The water effect might need some special texture for it. The maps with water in them would have to be updated.
Also, it's been almost 6 months since the last update, what makes you think that the bloom thingy isn't in the mod yet.