duanes
How many hours of direct sunlight do your palms receive?
The 180 (under the patio) half the tank gets about 2 hours indirect eastern sun in the morning, and a little less western sun the other half of the tank in the afternoon. Below some afternoon sun.

Although the seasons and cloud cover can alter it quite a bit.
As of this season, the newly set up 125 gets about 6 hours direct sun morning into the early afternoon.
When first set up (no plants) algae was growing on the sand, as of late (with moving over some Vallisneria, and Papyrus on the east end) algae is still growing on the glass, but the substrate is starting to clear.
Below a couple shots from yesterday of the 125, at @ noon.

Had to move my only other male Andinoacara to the 125, it was being harassed relentlessly in te 180, by the other fry guarding pair.
By the way neither tank gets any artificial light, by 6 pm, sitting outside is impossible due to the onslaught of biting insects, so there is really no point.