i think you mentioned this set up is going to be matained by a third party? is this third party a business or just a family friend? i am wondering why they didnt explain the time it takes to cycle a new aquarium weather its FW
your aquarium is going to smell and look like crap for a while. at least mind did. a cycle is going to take place. theres alot of great reading on this web site that explains what a cycle is and why its so important that we dont disturb it while its working. if you want a good looking tank this has to be done. and the good news is your on your way to completing this task. the alage you are seing is most likey green is it not? this will happen do to the raise in ammo. so you will see you ammo. peak. and fall as the natrites begin to peak. and then fall just like the ammo. this is due to the natrates raising. the whole process took me about 2-3 months to complete. some tanks complete this task in record time. others dont fair to good and take forever. (hince me!) dont rush this process. the only thing you get out of rushing your cycling process is a empty bank account.
now the bad news. you mention you have 4 fish and inverts. i dont like using fish to cycle a new tank. but others dont see anything wrong with it. again theres alot of good reading here to also show you how to cycle a new tank with out fish. ok, back to the 4 fish. i am sad to say you will most likey loose your fish when your ammo. peaks. its so stressfull on anything that inhabits your aquarium. if they don't die they will want to! now, i am not saying they will die either beacuse i once cycled my very first tank with a damsel. and that little fart was the toughest SOB i ever seen. such a bully them damsels are. lol
my suggestion is if you want to keep them do PWC
every other day 10% and try to keep your ammo as low as possible. the cycle will still take place with out peaking but it will just take alot longer then normal. or you can remover them all together and read up on the shrimp methed of cycleing your tank. i cant remember if you said you had LR
. if so thats all you need if it was uncured LR
. once the cycle is complete then add your inverts to clean up the mess. they do a great job at it!
try to keep your lights out. that only causes alage blooms and just keep doing PWC
's you may be ok.
BTW do you have any friends that have a stable and mature SW
tank? if so go steal a cup full of their sand or Crushed coral and stick it in you sand bed or filtration system. that will also greatly increase yous cycle time.
just my 2 cents.. hope this helps. i am sure others will chime in.