The following banners and text links link to gardening related products. Some are pretty generally for all manner of garden related products. Others are more particularly focused. I checked them out and all have at least some worthy items and most are really quite good. Unfortunately, I have not found any water garden supply affiliates but the google ads on all the pages have some excellent resources.
Beautiful Water Features - Greenfingers
GADGETS AND SUCH
ORNAMENT & DECOR
OUTDOOR TOOLS AND EQUIPMENT
Get $40 Off Bosch CPK40-18 Combo Kit use coupon code BT0440 during checkout
SPORTS / OUTDOOR CLOTHING