Liquids absorb quickly, so you'll need to feed more often. Dry fertilizer is the opposite, making them a good choice if your looking to feed less often or worried about over fertilizing. Always look at the the NPK numbers of the packaging of the fertilizer or nutrients. While the plant is growing you want a boot of N, but when flowering reduce N and use more PK. If in doubt go with a balanced mix like 5-5-5, where all numbers are equal.