As DrRob mentioned lumens aren't good here. Best indication of light is price in my opinion. I bought in January 2012 Aquarey Gro Beam 500 (now they have better ones 600) and I'm very pleased with it. Website changed but you could see comparison with different lights and also effects for plants...
Only thing I know about pesticides is that worms don't like it and leave apples alone. As for tank it actually looks nice,I like the colours of snails but if you have plants then you supply it with food. You could add something inside like small stone or plant
This aquarium could give you...
I'm gonna get new external filter in few weeks,did research on it . At some point you will see small leaks,even best ones have it, this is due to old O rings which should be replaced (don't know how often though) and also you could use vaseline for leaks. If you don't have instruction then maybe...
It's very difficult to tell how much light you should have. I bought LED's from american company which stated that 1Wof LED's is equivalent to 1W of light bulb.
I personally don't agree with it as I replaced 39W with 2x 14W and I have much more light. Also lumens are used as a guide only because...
Algeas do't harm fish except taking air from water in minimal ammounts to grow. You have plastic plants so it wouldn't harm them but it doesn't look nice.
You could google your algeas so we could see what it is exactly and how to deal with it.
Small fish eat algeas especially platys, sword tail...
When I had angels they didthe same thing with flakes and frozen food. IMO sometimes they get too much so they need to spit it out and take fewer. I wouldn't advice flakes because :
1) They discolour your water (fish don't see tiny pieces which are left over)
2) It's not meat like worm or...
Hi guys I'm Norbert born in Poland and living in England.
I started aquaristic 2011 when my friend gave me 20L tank with fish to take care of durning his holiday. As I had no idea about fish keeping I put fish into tap water and overfed it.
After few weeks fish died from high level of ammonia...
Edit: It's not 1L per 1W, it's actually 0.3W up to 1W per liter depending on plants demand. Moss etc. has 0.3 and standard is 0.5W, for more demanding plants usually with nice intence colors you're looking at 1W max. Sorry for mistake
This is even better that filter should be changed once every few months.
I reaad recently about external filters and although this Fluval is Itally company which performes well there's also german company which has hundreds of possitive reviews. Some people had it for 4 years and it still...
I never thought about it honestly, it's good to know this.
About filter sponges Yes. I have very crappy filtration through my cover and my sponges are thin so I'm replacing them 2/3 times a week.
For internal filter you should be cleaning them once a week and after a month replace.
For external...