well, still no hatches here (six of ten have hatched at the school but the water is much warmer there)
i did decide to replace the k4 with a closed loop to make is safer for the eventual cuttles. i also decided to add a single t5 bulb on the front and the back edge of the tank.
so, friday after work, i drained the tank, moved the sand aside, drilled two holes in the bottom of the tank, plumbed up the pump and put most of the water back in
here it is just after putting the sand back - that unpainted elbow will be replaced with locline
from the end
from the front
here is the pump underneath
took this pic to show how much water the closed loop will be moving - i think the pump is rated around 1000 gph
this morning i put the rocks back in and waited for the water to clear up so i could arrange them.
after finish the rockwork this afternoon, i made a couple of low profile acrylic fixtures for the t5 lights.
first i cut groves in the acrylic to make it easier to bend
here it is once the fixtures were finished and installed
here it is - water is still pretty cloudy and i still have to add a "y" and a couple of nozzles on the locline