Is the lighting compact fluorescent or your standard bulb? If it's the latter, I would suggest adding a CF screw in bulb. You don't have to use a high wattage but I think the CF bulb will work better for your plants. Also, I wouldn't dose any ferts (if you are dosing anything) until about a week. Then do a water change and add a small amount of ferts 1xweek. That is just my suggestion. I know other people have had success not dosing ferts at all. On a side note, the plants may die a little bit the first week in a low tech. Mine did, but new leaves are sprouting out now to replace the old ones. I think the plants just need to get adjusted to the conditions. Oh, and my water got cloudy too (this is normal). I let it be but a few days later, I did end up doing a 50% WC (it was almost a week, 6 days).
Oh yes, I forgot to mention, my HOB's outflow is completely submerged in water too with no ill affects.