Wow that's fast. Did you have some sort of procedure, like dropping a certain amount on the quarter hours until you were done at one hour?
Hey Minorhero and welcome! Glad you like the thread!
I like your idea of sea grasses and seahorses. I have to say though I think it will be a challenge. You said you are new to salt water. It's good to start with less difficult species to learn the skills and have some successes, before trying more difficult creatures.
Let's get into your questions. I never tested PAR, but considering the depths grasses inhabit, you'll need lighting on the brighter side - like lighting that would be considered bright reef lighting. If I were to test PAR, I'd test it at half depth to get an average for the length of the blades. My Manatee Grass has grown quite tall to reach brighter light. I'd agree a six inch substrate is good. You might be able to go a touch shallower if needed. I'm anti-hermit but that's just me. The emerald crab I tried ignored bubble algae, ate desirable macro algae and ignored the grasses.
I found fresh water planting methods worked great with grasses and macros. My concern would be combining fertilizers with seahorses. Dechlorinated tap water may be fine for the plants but probably not with seahorses. If you are serious about salt water, get a good RO/DI setup.
Good luck with your project!
[MENTION=50841]Michael Hoaster[/MENTION]
This is a great thread! I'm going through it now for all the information you provide. I am planning to do a tank much like yours but with seahorses. You are one of the few active people I have found with first hand experience growing seagrass. Hopefully you don't mind a few questions.
Right now I am trying to figure out how much light I need and how much sand, plus what my clean up crew is going to look like.
I read you are using a 400w metal halide, any idea how much par that is at substrate? I read manatee grass needs somewhere around 200-300 par but it wasn't clear at what depth that was supposed to be, I'm assuming at substrate but figuring that out in advance would be great.
I've read manatee grass needs 6" of substrate, has that been your experience as well?
For clean up crew I am limited by the seahorses. Blue legged hermit crabs and emerald crabs are potentials though. I read you found a hermit crab or 2 in your grass and moved them. Did you ever live with them in the tank? I read your emerald crab ate your macros, but it wasn't clear if it ate any of the grass?
Right now I'm planning for a mix of manatee grass and shoal grass in the tank. I will be treating the tank much like a freshwater tank for dosing fertilizer using the pps-pro method and injecting co2 via a reactor. I have a lot of experience with freshwater tanks but zero with saltwater, so a lot of basics are an adventure for me ;P Since I won't be doing any corals I was planning to use tap water. Do you think that will be an issue for the grasses?
Thank you for any information!
Hey Dawn, welcome back! I'm very excited about the two new fish! Yes, I had an Atlantic Blue tang before. This new one is a Pacific version. Can't wait to get them in the display!
QT14