Such ponds are obviously only suited to tropical species if adequately heated and located in a warm indoor environment.
(Such ponds; are obviously; only suited to tropical species if adequately heated and located in a warm indoor environment) (tropical species if adequately heated; located; L:in a warm indoor environment)
Such ponds tropical species if adequately heated
are obviously located
only suited to tropical species if adequately heated and located in a warm indoor environment
L:in a warm indoor environment