[Peter Finke]

1. Remember: with Paros, you are installing a different type of aquarium than the normal one. You cannot rely on plants that stand pH of 5 or below.
2. Be generally careful with plants. If they strive they change the water conditions. This is compltetely different in the normal aquarium type.
3. The RO-water is stable but it is free of many ingredients besides H and O. You could use it, but take rain water as alternative.
4. A 38-gallon tank is much too big for Paros. A pair of them needs in nature not more space than what equals a 5 to 10 gallon tank.
5. Generally speaking, you should be aware of the special needs of your fish. And that means of the special task of establishing a blackwater aqaurium. It is different in some important respects.