Compacts put out very little light. For example, I took par readings for my brother when he was running compacts and he barely had 25 par at the sandbed of his 90g. He's closer to 200 par now at the same depth with leds.
If your bulbs are older, it could have just been going down gradually so maybe they are just not as bright as they once were.
If your bulbs are older, it could have just been going down gradually so maybe they are just not as bright as they once were.