WordNet (r) 3.0 (2006):

aquiculture
    n 1: a technique of growing plants (without soil) in water
         containing dissolved nutrients [syn: hydroponics,
         aquiculture, tank farming]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "aquiculture":
   algology, bathymetry, botany, bryology, dendrology, fungology,
   hydrography, hydroponics, marine biology, mycology, oceanography,
   paleobotany, phycology, physiological botany, phytobiology,
   phytochemistry, phytoecology, phytogeography, phytography,
   phytology, phytomorphology, phytonomy, phytopaleontology,
   phytopathology, phytotaxonomy, phytoteratology, phytotomy,
   phytotopography, plant anatomy, plant pathology, plant physiology,
   pomology, structural botany, systematic botany, thalassography