Don't panic
![Smile :)](./images/smilies/icon/smile.gif)
The plants are a wonderful thing in many ways.
If you have all the regular water things like movement etc, the oxygen doesn't get low enough to worry the fish. If you have a rushing stream kind of set-up for high oxygen fish, you probably wouldn't have too many plants anyway. Take a look at the tanks in this thread and you will never worry again - he's got a lot of fish! Beware it's really picture heavy but it's like a dream slideshow.
http://www.planetcatfish.com/forum/view ... =4&t=21831
For the hard green dots you can turn the water movement off for a few minutes and syringe Seachem's Flourish Excel Liquid Carbo in a slow dribble across the glass. Use the maximum amount in the syringe for what the label recommends as a first dose. In a few days maybe a week, the dots turn kind of orange and you can just brush it off and vacuum it up. The manual way is to use a razor blade to give it a scrape while you wait for the balance to happen. If you water's good as far as readings go, relax and watch nature work
You can also take a leisurely browse at the
http://www.ukaps.org It's UK Aquatic Plant Society. You might be able to look up your plants there or somewhere else on the web to see which ones are a little sensitive to changes. My spiral Vals pretty much melted -turned to mush and faded away - when I first got them but I ignored them and now they are nice and lush with lots of baby runners spreading out.
You may go through a green water bloom too because of the high nutrients etc so if it starts to happen, don't panic. It too shall pass
It looks like pea soup so kind of freaky but simply cover the surface with cheapie floating plants for a week or so and poof gone - the key there is to use the type of plants that need lots of feeding. You can even use a houseplant with the soil cleaned off the roots and clipped to the side of the tank with the roots dangling in. Pothos and spathophylum (peace lily) work quite quickly. Mini-roses will clean out a backyard pond in record time - HEAVY feeders! Tomato plants are heavy feeders too but stay away from anything that has the possibility to transfer poisons to the fish.
Another option is called a black out. It's exactly what it sounds like - paper up the sides and don't peek for 3-5 days. No feeding and a BIG water change to clean up all the dead algae bits. Don't bother doing this for your little green dots, it's only really needed for the pea soup thing.
I'm still learning about catfish etc but guess how I know so much about algae fixes? Been there done that! You're not alone, my current new tank has all the bells and whistles that I learned about and it's been the biggest pain but it's provided the most education.
I still rearrange my tanks like a madwoman but I'm a gardener - nothing is ever 'finished'...
Keep up with your regular partial water changes(nitrite/nitrate testing) and only 'clean' your filters in a bucket of old tank water and you'll get the upper hand. Sorry for such a long yadayada but I know how frustrating it can be AND how nice it can be when all finally goes well.
Good luck, I'll keep my eyes peeled for any other green dot solutions for you.
Cheers
PS take some pictures so you remember your progress!
Racing, shoes and fish. Nothing else matters. Oh, and bacon.